Learn how to become a colorectal surgeon, including college, medical school, general surgery residency, advanced colorectal training, board certification, and the complete timeline.
Becoming a colorectal surgeon generally requires four years of college, four years of medical school, five years of general surgery residency, and one additional year of accredited colon and rectal surgery training. For someone who moves directly through each stage, the traditional pathway takes approximately 14 years after graduating from high school, although research years, gap years, dual-degree programs, parental leave, or other personal circumstances can extend that timeline.
Colorectal surgeons diagnose and treat diseases involving the colon, rectum, anus, surrounding tissues, and pelvic floor. Their work may include major abdominal and pelvic operations, minimally invasive and robotic surgery, colonoscopy, cancer care, inflammatory bowel disease, diverticulitis, anorectal procedures, ostomy care, and the evaluation of conditions such as constipation, fecal incontinence, fistulas, and rectal prolapse.
Although the additional training is frequently called a colorectal surgery fellowship in everyday conversation, accredited programs are officially designated as colon and rectal surgery residencies. The terminology can feel confusing when you first encounter it, but the practical sequence is straightforward: physicians complete a general surgery residency and then enter one focused year of advanced colon and rectal surgery training.
Current ACGME requirements state that the advanced colon and rectal surgery program must last 12 months, while the American Board of Colon and Rectal Surgery requires completion of an accredited colon and rectal surgery residency after an approved general surgery program that leads to American Board of Surgery certification.
Because the entire pathway is built on general surgery, my guide on how to become a general surgeon provides a helpful foundation before moving into the more specialized details below.
The Path to Becoming a Colorectal Surgeon
The traditional pathway includes four years of college, four years of medical school, five years of general surgery residency, one year of accredited colon and rectal surgery training, medical licensure, general surgery certification, and the separate colon and rectal surgery certification process.
A student who graduates from high school at 18 and moves continuously through each stage might complete training at approximately 32 years old, while someone who takes gap years or spends dedicated time conducting research during general surgery residency may finish later.
The additional colorectal year is shorter than several other post-general-surgery fellowships, but the total pathway remains lengthy because physicians must first develop the broad judgment and technical foundation of a general surgeon. That general surgery experience is not simply a requirement to complete before reaching the specialty someone actually wants; it provides the emergency surgery, critical care, abdominal anatomy, postoperative management, and complication experience that makes advanced colorectal training possible.
What Is a Colorectal Surgeon?
A colorectal surgeon is a physician with advanced expertise in diseases affecting the colon, rectum, anal canal, perianal region, intestinal tract, and pelvic floor.
The specialty was historically associated with the term “proctology,” although colon and rectal surgery is now the formal name, and colorectal surgeon is the more familiar modern title.
The field includes both benign and malignant disease, which means a colorectal surgeon might spend one day operating on rectal cancer and another treating inflammatory bowel disease, diverticulitis, hemorrhoids, an anal fistula, fecal incontinence, or a complication involving an ostomy.
The specialty also extends beyond the operating room. Colorectal surgeons perform endoscopy, interpret specialized pelvic-floor testing, recommend medical or rehabilitative treatments, participate in multidisciplinary cancer conferences, manage patients after surgery, and follow people whose conditions may require years of care.
That combination can be especially appealing to students who enjoy technically complex surgery but also value diagnostic reasoning, outpatient relationships, gastrointestinal physiology, and the opportunity to follow patients across a longer period than some other surgical careers allow.
What Does a Colorectal Surgeon Do?
Colorectal surgeons evaluate symptoms, establish diagnoses, determine whether surgery is appropriate, perform operations and endoscopic procedures, manage postoperative recovery, and provide long-term follow-up.
Their work may include treating colon, rectal, and anal cancer; managing Crohn disease and ulcerative colitis; performing colonoscopy; treating diverticulitis and bowel obstruction; caring for patients with hemorrhoids, fissures, abscesses, and fistulas; evaluating constipation and fecal incontinence; treating rectal prolapse; creating or reversing ostomies; and addressing complications after previous colorectal operations.
Some patients need major surgery, while others may benefit from medication, dietary adjustments, pelvic-floor physical therapy, biofeedback, endoscopic treatment, an office procedure, or careful observation.
One of the most important parts of the specialty is learning when an operation will meaningfully improve a patient’s health or quality of life, because the presence of a surgical condition does not automatically mean that surgery is the best first treatment.
What Conditions Do Colorectal Surgeons Treat?
Colorectal surgery includes several distinct groups of disease, which gives the specialty variety while keeping the clinical focus centered on a defined area of anatomy and physiology.
Current ACGME requirements include competence in colorectal cancer, inflammatory bowel disease, diverticular disease, hereditary colorectal conditions, anorectal disorders, stoma complications, functional bowel disease, pelvic-floor disorders, fecal incontinence, rectal prolapse, and many related conditions.
Colon, rectal, and anal cancer
Colorectal surgeons play a central role in diagnosing, staging, and surgically treating cancers of the colon, rectum, and anus.
The surgeon may review colonoscopy findings, pathology, CT scans, rectal MRI, and other studies before determining whether a tumor can be removed and how an operation should fit with chemotherapy, radiation, immunotherapy, or another treatment.
Colon cancer may often be treated with surgery earlier in the treatment sequence, while rectal cancer commonly requires especially careful coordination because chemotherapy and radiation may be recommended before an operation. The treatment plan depends on the location, stage, biology, symptoms, overall health, and individual priorities of the patient rather than one universal order that applies to every cancer.
The operations themselves can range from a segmental colon resection to a technically demanding pelvic procedure involving the rectum, surrounding nerves, lymph nodes, sphincter muscles, and nearby organs.
Colorectal cancer care overlaps with the broader principles discussed in my guide on how to become a surgical oncologist, although the advanced training differs. Colorectal surgeons complete a focused one-year program covering benign and malignant disease of the colon, rectum, anus, and pelvic floor, while complex general surgical oncologists complete a two-year fellowship that encompasses cancers across several organ systems.
Inflammatory bowel disease
Colorectal surgeons work closely with gastroenterologists to care for patients with Crohn disease and ulcerative colitis when surgery becomes part of the treatment plan.
Surgery may be considered because medications are no longer controlling the disease, an obstruction or perforation has developed, infection or fistulas have become difficult to manage, precancerous changes have been identified, or the illness is having an unacceptable effect on the patient’s daily life.
These decisions are often nuanced because inflammatory bowel disease commonly affects younger patients and may continue throughout adulthood. The surgeon must consider nutrition, previous medications, fertility, future bowel function, the possibility of more than one operation, and how the chosen procedure may affect school, work, relationships, travel, and other parts of life.
A patient with ulcerative colitis may be considering a multistage operation that removes the colon and creates an internal pouch, while a patient with Crohn disease may need a more limited operation designed to treat a specific complication without removing unnecessary bowel. The best decision requires close collaboration among the surgeon, gastroenterologist, radiologist, pathologist, dietitian, ostomy nurse, and patient.
Diverticulitis and diverticular disease
Diverticula are small pouches that can develop in the wall of the colon, and many people never experience a problem from them. Others develop inflammation, abscesses, strictures, fistulas, perforation, or repeated episodes that substantially affect quality of life.
A colorectal surgeon may help determine whether someone should continue nonoperative treatment, undergo drainage of an abscess, consider a scheduled colon resection, or receive emergency surgery because of a severe complication.
The decision is not based only on the number of episodes a patient has experienced. The severity of the disease, overall health, complications, personal preferences, and effect on daily life all matter, which makes the conversation more individualized than a simple rule that everyone with recurrent diverticulitis needs surgery.
Anorectal disease
Colorectal surgeons treat hemorrhoids, anal fissures, anal fistulas, perirectal abscesses, pilonidal disease, anal stenosis, hidradenitis, certain HPV-related conditions, anal and rectal tumors, and other diseases affecting the anal canal and surrounding tissues.
Some of these conditions can be treated in an office or outpatient setting, while others require hospitalization or a more complex operation.
Patients may delay seeking care because symptoms involving bowel movements, bleeding, pain, drainage, incontinence, or the anus can feel embarrassing to discuss. A colorectal surgeon therefore needs to ask clear questions and conduct sensitive examinations without making the patient feel judged or uncomfortable.
This may seem less dramatic than performing a large cancer operation, but helping someone resolve a painful fistula, regain continence, or return to normal daily activities can be just as meaningful to the patient.
Pelvic-floor disorders and functional bowel disease
The pelvic floor contains muscles, nerves, and supporting structures that help control bowel movements and continence. When these systems do not work together correctly, patients may experience severe constipation, obstructed defecation, fecal incontinence, rectal prolapse, or other functional problems.
Evaluation may involve anorectal manometry, defecography, dynamic imaging, transit studies, sphincter ultrasound, electromyography, or other specialized testing.
Treatment may include medication, dietary changes, bowel-regimen adjustments, pelvic-floor physical therapy, biofeedback, nerve stimulation, office procedures, or surgery. Colorectal surgeons must therefore understand both operative and nonoperative care rather than viewing every problem through the lens of an operation.
Hereditary colorectal conditions
Colorectal surgeons also care for patients with inherited cancer and polyposis syndromes, including familial adenomatous polyposis, Lynch syndrome, and other less common conditions.
A patient who currently feels healthy may be considering a preventive operation because of a high future cancer risk, which can make the decision emotionally and practically difficult.
The surgeon must explain the expected risk without treatment, the available operations, possible changes in bowel function, the potential need for an ostomy, and how the choice may affect future quality of life. Genetic counselors, gastroenterologists, oncologists, and family members may all be part of that discussion.
What Procedures Do Colorectal Surgeons Perform?
Colorectal surgeons perform open, laparoscopic, robotic, endoscopic, transanal, and outpatient anorectal procedures.
Major operations may include partial or total colectomy, proctectomy, total proctocolectomy, low anterior resection, abdominoperineal resection, ileal pouch-anal anastomosis, surgery for rectal prolapse, ostomy creation, ostomy reversal, and complex reoperative pelvic surgery.
They may also perform hemorrhoid procedures, fistula surgery, drainage of anorectal abscesses, treatment of anal fissures, transanal excision, colonoscopy, flexible sigmoidoscopy, rigid proctoscopy, and anoscopy.
Current ACGME requirements specifically include competence in anorectal and perineal procedures, abdominal and pelvic surgery, small-bowel and colorectal operations, and both diagnostic and therapeutic colonoscopy.
The range of procedures is one reason the field can feel more varied than the name initially suggests. A surgeon may spend several hours performing a difficult rectal cancer operation and later complete a much shorter outpatient procedure that still provides enormous relief for a patient who has been living with pain or drainage for months.
What Is an Ostomy?
An ostomy is a surgically created opening that allows intestinal contents to leave the body through the abdominal wall and collect in an external pouch.
An ileostomy uses a portion of the small intestine, while a colostomy uses the colon. Either may be temporary or permanent depending on the disease, the operation performed, and whether the intestinal tract can later be reconnected safely.
Some patients need a temporary ostomy to protect a new intestinal connection while it heals, while others require a permanent ostomy because the rectum and anus must be removed or because restoring the normal pathway would not be safe.
Patients may worry about appearance, odor, clothing, work, exercise, travel, intimacy, diet, and whether other people will notice the pouch. Those concerns deserve thoughtful discussion rather than being dismissed as secondary to the operation.
A colorectal surgeon works closely with wound, ostomy, and continence nurses who teach patients how to manage the pouch, care for the skin, recognize problems, and adapt daily routines. Many people with ostomies return to work, exercise, travel, swim, and participate in relationships, although reaching that point may require time, education, and emotional support.
Is Colorectal Surgery a Residency or Fellowship?
The additional year is frequently called a colorectal fellowship because it occurs after general surgery residency and functions similarly to other post-residency subspecialty programs.
However, the ACGME and American Board of Colon and Rectal Surgery officially refer to accredited programs as colon and rectal surgery residencies, and the physicians in training are technically residents within that specialty.
The standard path is therefore:
College → medical school → general surgery residency → colon and rectal surgery residency
The terminology is worth explaining because students may see “colorectal fellowship” on informal pages while official application and certification materials use “residency.” Both generally refer to the same one-year advanced training stage after general surgery.
Step 1: Complete College and the Premed Requirements
The journey begins with earning a bachelor’s degree and completing the prerequisite courses required by the medical schools where you plan to apply.
There is no required undergraduate major for colorectal surgery or medicine more broadly. You may study biology, chemistry, engineering, psychology, public health, business, history, English, or another subject that interests you, provided you complete the necessary prerequisite courses and prepare for the MCAT.
During college, students generally build experience through clinical work or volunteering, physician shadowing, service, research, leadership, teaching, mentoring, and meaningful involvement in their communities.
You do not need to make your activities gastrointestinal or surgical, and many future colorectal surgeons do not discover the specialty until medical school or residency. Medical schools understand that premed students have limited exposure to the many subspecialties that become available years later.
Shadowing a colorectal or general surgeon can be helpful when an opportunity is available, but clinical experience in another environment can still teach you how to communicate with patients, work as part of a team, and understand the responsibility of caring for another person.
My premed guides and application resources can help you plan the college and application years without feeling as though you need to identify your final specialty before you have even entered medical school.
Step 2: Take the MCAT and Apply to Medical School
Most students take the MCAT before applying to medical school, and admissions committees review the score alongside your GPA, clinical experiences, service, research, leadership, essays, letters of recommendation, and interviews.
An interest in gastrointestinal medicine, cancer care, surgery, or another related area can become part of your story when it is rooted in meaningful experience. However, there is no expectation that you will already understand the differences among colorectal surgery, gastroenterology, surgical oncology, gastrointestinal pathology, and the many other specialties involved in caring for these patients.
The more immediate question for a premed applicant is why becoming a physician feels meaningful, while the decision about the eventual specialty can remain open until clinical experience gives you a clearer view.
For free MCAT planners, medical school application checklists, tracking spreadsheets, and other resources, you can explore my free premed and MCAT resources.
Step 3: Complete Medical School
Future colorectal surgeons earn either an M.D. or D.O. degree, with medical school traditionally lasting four years.
During the earlier portion of the curriculum, students study anatomy, physiology, pathology, pharmacology, immunology, microbiology, genetics, clinical reasoning, and the major organ systems.
Anatomy becomes especially important in colorectal surgery because the pelvis contains the rectum, bladder, reproductive organs, blood vessels, muscles, ureters, and nerves controlling bowel, urinary, and sexual function within a relatively confined space.
The surgeon must understand not only how to remove diseased tissue but also how the operation may affect continence, urinary function, fertility, sexual function, and overall quality of life.
During the clinical years, students rotate through general surgery, internal medicine, pediatrics, family medicine, psychiatry, obstetrics and gynecology, neurology, emergency medicine, and other specialties.
The general surgery clerkship may provide the first meaningful exposure to patients with colorectal cancer, bowel obstruction, diverticulitis, inflammatory bowel disease, ostomies, gastrointestinal bleeding, or anorectal conditions.
Students may help care for patients before surgery, observe operations, follow postoperative recovery, attend outpatient clinic, and learn how surgeons respond when complications develop.
Step 4: Explore Colorectal Surgery During Medical School
Students interested in the field may be able to complete a colorectal surgery elective, participate in colorectal or gastrointestinal research, attend cancer tumor boards, spend time in inflammatory bowel disease clinics, explore gastroenterology, or work with a mentor in the specialty.
One of the helpful features of a colorectal rotation is the opportunity to see how varied the work can be. A student might observe a major rectal cancer operation, attend a clinic where patients are discussing inflammatory bowel disease or ostomy reversal, and then see outpatient treatment for hemorrhoids or an anal fistula.
These experiences also reveal how important communication is within the specialty. Patients may need to discuss bowel habits, bleeding, pain, incontinence, sexual concerns, drainage, or other symptoms that feel private and embarrassing.
A surgeon who creates a calm and respectful environment makes it easier for the patient to share clinically important information, which can improve both the diagnosis and the experience of care.
The specialty also offers more continuity than students sometimes expect. Colorectal surgeons may follow a patient through cancer treatment, multiple stages of surgery, ostomy management, inflammatory bowel disease, pelvic-floor rehabilitation, or recovery after a difficult complication.
For someone who enjoys surgery but also values longer-term patient relationships, that combination can become one of the field’s strongest attractions.
Step 5: Decide Whether General Surgery Is the Right Foundation
Before entering colorectal surgery, you must complete the broad training of a general surgeon.
General surgery residency includes abdominal and gastrointestinal surgery, breast surgery, endocrine surgery, surgical oncology, trauma, emergency general surgery, critical care, skin and soft-tissue surgery, and postoperative management.
You will care for patients whose conditions have little to do with colon and rectal disease, and you may spend significant portions of residency treating gallbladder disease, hernias, appendicitis, breast cancer, thyroid conditions, trauma, infections, and many other problems.
That breadth develops the judgment and technical ability needed before specialization. A colorectal surgeon still needs to recognize shock, manage a critically ill patient, understand nutrition, treat infection, respond to an anastomotic leak, and make emergency decisions when a postoperative course changes unexpectedly.
An interest in colorectal cancer or inflammatory bowel disease may guide you, but enjoying the broader responsibilities of surgery is equally important. My guide on how to become a general surgeon offers a more complete look at that foundational training.
Step 6: Apply to General Surgery Residency
Medical students pursuing colorectal surgery ordinarily apply to categorical general surgery residency programs through ERAS and participate in the residency match.
Programs may consider clinical performance, surgery clerkship evaluations, licensing examination results, letters of recommendation, scholarly work, leadership, service, professionalism, personal statements, and interview performance.
Colorectal research is not required to match into general surgery. Meaningful research in surgery, oncology, inflammatory bowel disease, health disparities, public health, quality improvement, education, basic science, or another area can help you develop relevant skills without needing to determine your fellowship before residency begins.
Students who already have a strong interest in colorectal surgery may consider whether a residency has fellowship-trained colorectal faculty, strong gastrointestinal and pelvic surgery exposure, endoscopy, cancer center access, inflammatory bowel disease programs, pelvic-floor services, mentorship, research opportunities, and a history of helping residents enter the specialty.
Those opportunities can support a future application, although the broader quality of general surgery education, resident autonomy, operative development, program culture, and trainee support should remain central to the decision.
Step 7: Complete General Surgery Residency
The traditional pathway includes at least five years of progressive general surgery education before colorectal specialization.
During those years, future colorectal surgeons learn to evaluate surgical disease, prepare patients for operations, perform increasingly complex procedures, interpret imaging and laboratory results, manage postoperative recovery, recognize complications, care for critically ill patients, lead teams, and communicate with patients and families.
General surgery residency commonly includes colon resections, emergency bowel surgery, management of obstruction and perforation, diverticulitis, ostomy creation, gastrointestinal cancer, inflammatory bowel disease, endoscopy, and anorectal conditions.
The depth of experience varies. Some residents train in departments with a large division of colorectal surgeons and a dedicated fellowship, while others gain their colorectal foundation from general surgeons who perform a broad range of gastrointestinal operations.
Either setting can produce strong surgeons, although fellowship mentors can be especially helpful when a resident wants to understand the application process and compare possible career directions within colorectal surgery.
Do Colorectal Surgery Applicants Need Research?
Research is not an absolute requirement for every colorectal surgery applicant, although it can strengthen an application and help residents determine whether an academic career interests them.
Possible research areas include colorectal cancer, inflammatory bowel disease, diverticulitis, pelvic-floor dysfunction, surgical outcomes, ostomy care, health disparities, enhanced recovery, robotic surgery, quality improvement, and surgical education.
Research can also help you learn how practice changes over time. The management of rectal cancer, inflammatory bowel disease, diverticulitis, and several other colorectal conditions continues to evolve as new evidence, medications, imaging methods, and operative techniques become available.
A meaningful project allows a trainee to understand the question, participate in the process, learn from a mentor, and see how evidence can improve care, which is more valuable than collecting projects only to increase the number of entries on an application.
Step 8: Apply to Colon and Rectal Surgery Training
General surgery residents generally apply during the later years of residency through the fellowship application and matching process used by participating programs.
Programs may review residency performance, operative development, letters of recommendation, colorectal exposure, research, teaching, leadership, professionalism, career goals, and interview performance.
Applicants may find that programs differ in their strengths. One may provide exceptional experience with complex rectal cancer and pelvic surgery, while another may be particularly strong in inflammatory bowel disease, pelvic-floor disorders, anorectal disease, robotic surgery, endoscopy, or academic research.
The advanced program lasts only one year, so applicants often look closely at clinical volume, resident autonomy, faculty mentorship, case diversity, call responsibilities, and whether graduates feel prepared to enter independent practice.
Step 9: Complete One Year of Colon and Rectal Surgery Training
The accredited colon and rectal surgery program lasts 12 months after the completion of general surgery residency.
Although the training is only one year, it is not simply a repetition of the colon operations already encountered during general surgery. The resident receives concentrated exposure to complex pelvic anatomy, rectal cancer, anal cancer, inflammatory bowel disease, anorectal disease, pelvic-floor physiology, hereditary syndromes, colorectal endoscopy, ostomy complications, functional bowel disorders, and advanced minimally invasive surgery.
Training occurs across the operating room, outpatient clinic, inpatient service, emergency department, endoscopy suite, tumor board, and specialized testing environments.
The resident learns how to evaluate a patient whose symptoms may require physiologic testing rather than immediate surgery, how to coordinate rectal cancer treatment with medical and radiation oncology, how to select among different operations for inflammatory bowel disease, and how to support someone adapting to an ostomy or altered bowel function.
The short duration makes a strong general surgery foundation especially important, because the resident is expected to arrive ready to build advanced expertise rather than relearn basic surgical principles.
Colorectal Surgery and Pelvic Anatomy
Pelvic surgery is one of the most technically and conceptually demanding parts of the specialty.
The rectum lies within a confined space surrounded by the bladder, ureters, reproductive organs, blood vessels, sphincter muscles, and nerves involved in urinary, sexual, and bowel function.
During a rectal cancer operation, the surgeon must follow oncologic principles while protecting surrounding structures whenever safely possible. Removing too little tissue may compromise cancer treatment, while unnecessary injury to pelvic nerves or other organs can create lasting effects on continence, urinary function, sexual health, and quality of life.
These considerations make surgical judgment as important as technical skill. The largest or most aggressive operation is not automatically the best operation, because the surgeon must balance cancer control, operative risk, function, and the patient’s personal goals.
Colorectal Surgeons and Endoscopy
Colorectal surgeons receive training in colonoscopy, flexible sigmoidoscopy, rigid proctoscopy, and anoscopy.
These procedures may be used to evaluate symptoms, identify tumors or polyps, obtain biopsies, examine inflammatory disease, assess a previous operation, plan a future procedure, or provide certain treatments.
Current ACGME requirements include both diagnostic and therapeutic colonoscopy, along with flexible and rigid examinations of the rectum and distal colon.
Gastroenterologists also perform colonoscopy, but the training pathways differ. A gastroenterologist completes internal medicine residency followed by gastroenterology fellowship and treats diseases throughout the digestive system primarily through medical and endoscopic care, while a colorectal surgeon completes general surgery and advanced colorectal training and can provide both endoscopic evaluation and operative treatment.
These physicians often work together rather than competing for the same role, particularly when a patient with inflammatory bowel disease, a large polyp, cancer, or another complex condition needs both medical and surgical expertise.
Step 10: Obtain Medical Licensure and Board Certification
Colorectal surgeons must hold a valid medical license in the state where they practice and satisfy the credentialing requirements of their hospitals or health systems.
For certification through the American Board of Colon and Rectal Surgery, a physician must complete an accredited colon and rectal surgery residency after an approved general surgery program and satisfy the applicable American Board of Surgery certification requirements.
The certification process includes written and oral examinations. The written examination evaluates knowledge of colon and rectal disease, while the oral examination focuses on the candidate’s ability to apply that knowledge and clinical judgment to patient-care scenarios.
Medical licensure and specialty certification are separate. Licensure provides the authority to practice medicine, while board certification demonstrates completion of the relevant training and examination standards.
How Long Does It Take to Become a Colorectal Surgeon?
The traditional pathway includes four years of college, four years of medical school, five years of general surgery residency, and one year of colon and rectal surgery training, creating a total of approximately 14 years after high school.
The timeline may become longer when someone takes gap years, completes a dual degree, spends dedicated years conducting research, takes leave, or changes direction during training.
A resident who completes two research years may spend seven calendar years within a general surgery program before beginning the additional colorectal year, which would increase the complete pathway to approximately 16 years after high school.
There is no required age by which training must be finished, and the most useful way to think about the timeline is often one stage at a time, because your experiences during medical school and general surgery residency will give you far more insight into whether the additional year aligns with the career you want.
Can General Surgeons Perform Colorectal Surgery?
General surgeons receive training in abdominal surgery, bowel resection, emergency colorectal disease, colon cancer, diverticulitis, obstruction, perforation, ostomies, and certain anorectal conditions.
Many general surgeons therefore perform colectomies and treat common colorectal diseases without completing the additional year, particularly in community or rural settings where a fellowship-trained colorectal surgeon may not be locally available.
Advanced colorectal training provides more concentrated expertise in complex rectal cancer, pelvic dissection, inflammatory bowel disease, anal and rectal disease, pelvic-floor dysfunction, fecal incontinence, hereditary syndromes, ostomy complications, and specialized endoscopy.
The additional training is not required for every surgeon who performs a colon operation, but it is the formal pathway toward a practice centered on colon and rectal disease and certification through the American Board of Colon and Rectal Surgery.
How Is a Colorectal Surgeon Different From a Gastroenterologist?
A gastroenterologist completes internal medicine residency followed by gastroenterology fellowship and treats medical diseases involving the esophagus, stomach, small intestine, colon, liver, pancreas, gallbladder, and bile ducts.
A colorectal surgeon completes general surgery residency followed by one year of advanced colon and rectal surgery training and focuses on diseases involving the colon, rectum, anus, pelvic floor, and related intestinal structures.
Both specialists may perform colonoscopy and care for patients with inflammatory bowel disease, bleeding, polyps, cancer, or other gastrointestinal problems, but the colorectal surgeon provides operative treatment when it becomes necessary.
A patient with Crohn disease may receive years of medical therapy from a gastroenterologist before meeting a colorectal surgeon for an obstruction or fistula, after which both physicians may continue participating in long-term care.
How Is a Colorectal Surgeon Different From a Surgical Oncologist?
Both colorectal surgeons and complex general surgical oncologists may treat colon or rectal cancer, although their additional training has a different focus.
A colorectal surgeon develops concentrated expertise in benign and malignant diseases of the colon, rectum, anus, and pelvic floor, including inflammatory bowel disease, anorectal conditions, functional disorders, endoscopy, and complex pelvic surgery.
A surgical oncologist completes two years of advanced cancer training across multiple organ systems and may treat gastrointestinal, hepatobiliary, pancreatic, breast, endocrine, melanoma, sarcoma, and other cancers depending on the practice.
For a patient with rectal cancer, either specialist may participate in care depending on the hospital, individual expertise, and complexity of the case. The title alone matters less than the surgeon’s actual training, experience, clinical focus, and access to a multidisciplinary cancer team.
How Is Colorectal Surgery Different From Acute Care Surgery?
Colorectal and acute care surgeons may both treat bowel obstruction, perforation, diverticulitis, intra-abdominal infection, and other urgent gastrointestinal conditions.
An acute care surgeon generally builds a practice around trauma, emergency general surgery, and surgical critical care, while a colorectal surgeon focuses on the complete range of colon, rectal, anal, and pelvic-floor disease, including scheduled operations, outpatient care, endoscopy, chronic illness, and emergency treatment.
A patient with perforated diverticulitis may initially be treated by an acute care surgeon because the condition presents overnight as an emergency, while a colorectal surgeon may later become involved for ostomy reversal, management of a fistula, or another planned operation.
The way these services collaborate depends on the hospital and which specialists are available.
Do Colorectal Surgeons Treat Children?
Colorectal surgeons primarily care for adults, although the exact age range depends on the institution and the surgeon’s training.
Children with Hirschsprung disease, anorectal malformations, congenital colorectal conditions, or other pediatric surgical problems are generally treated by pediatric surgeons or multidisciplinary pediatric colorectal programs.
My guide on how to become a pediatric surgeon explains that separate two-year fellowship pathway.
Some pediatric surgeons develop a particular focus on colorectal disease, and adult colorectal surgeons may become involved when patients with complex childhood conditions transition into adult healthcare.
Where Do Colorectal Surgeons Work?
Colorectal surgeons work in academic medical centers, community hospitals, cancer centers, inflammatory bowel disease programs, pelvic-floor centers, Veterans Affairs hospitals, private practices, multispecialty surgical groups, and large healthcare systems.
Academic surgeons may divide time among operations, clinic, endoscopy, research, teaching, tumor boards, quality improvement, and administrative leadership.
Community colorectal surgeons may maintain broad practices involving cancer, inflammatory bowel disease, diverticulitis, anorectal procedures, colonoscopy, pelvic-floor disorders, ostomies, and emergency consultations.
Others develop a narrower clinical focus in rectal cancer, complex inflammatory bowel disease, pelvic-floor dysfunction, robotic surgery, anorectal disease, or reoperative pelvic surgery.
What Is a Colorectal Surgeon’s Schedule Like?
The schedule depends on the practice size, hospital coverage system, call responsibilities, academic expectations, and balance among operating, clinic, and endoscopy.
A typical week may include one or more major operating days, outpatient clinic, colonoscopy or other endoscopy, inpatient rounds, emergency consultations, tumor board, research meetings, and teaching.
Many colorectal operations are scheduled in advance, but urgent problems still arise, including bowel perforation, obstruction, bleeding, severe infection, complications after surgery, ischemic bowel, and problems involving an ostomy.
Call may be shared with other colorectal surgeons, divided among a larger general surgery group, or structured through an acute care surgery service, which means two jobs within the same specialty can provide very different lifestyles.
Students and residents often gain a clearer understanding by asking physicians how their particular practice divides elective surgery, emergency call, clinic, endoscopy, research, and postoperative responsibilities rather than trying to judge work-life balance from the specialty title alone.
How Can Premed Students Explore Colorectal Surgery?
Premed students may explore the field through shadowing, hospital volunteering or employment, cancer or gastrointestinal research, work with digestive-disease organizations, ostomy-support programs, or conversations with surgeons and patients.
Direct specialty exposure is helpful but not required, because many future colorectal surgeons do not encounter the field meaningfully until medical school or residency.
When an opportunity is available, observing the entire care process can be more informative than seeing only an operation. The clinic conversations about cancer, incontinence, ostomies, inflammatory bowel disease, or quality of life often reveal how much communication and longitudinal care exist within the specialty.
You may discover that the combination of surgery and long-term relationships is especially appealing, or that gastrointestinal disease interests you but gastroenterology, oncology, pathology, or another field feels like a better match. Each conclusion helps narrow the path in a thoughtful way.
How Can Medical Students Prepare for Colorectal Surgery?
Medical students interested in colorectal surgery benefit most from becoming reliable, curious, and thoughtful members of the clinical team while building a strong foundation in general medicine and surgery.
A colorectal elective, meaningful research, attendance at tumor boards, exposure to gastroenterology, mentorship, and a strong surgery clerkship can help students understand the field and prepare for general surgery residency.
Technical ability develops through years of supervised training, so a medical student does not need to enter residency prepared to perform a pelvic dissection or independently manage complex inflammatory bowel disease.
Preparation, teamwork, communication, compassion, and the willingness to accept feedback are far more important at this stage than trying to appear like a finished surgeon.
What Qualities May Fit Colorectal Surgery?
Colorectal surgery may appeal to someone who enjoys anatomy, abdominal and pelvic surgery, cancer care, gastrointestinal physiology, endoscopy, outpatient procedures, and longer-term patient relationships.
Communication matters because patients may need to discuss symptoms involving bowel habits, continence, sexual function, rectal pain, ostomies, or the anus, and these conversations become easier when the surgeon approaches them directly but without judgment.
The field also requires attention to function and quality of life. A technically successful operation may still leave someone adjusting to altered bowel function, an ostomy, urinary changes, or a difficult recovery, and a strong colorectal surgeon remains involved in those outcomes rather than viewing the operation as the endpoint.
Patience, humility, attention to detail, and comfort working with gastroenterologists, oncologists, radiologists, pathologists, physical therapists, ostomy nurses, and other professionals can all be valuable within the specialty.
Is Becoming a Colorectal Surgeon Worth It?
Colorectal surgery can be an especially meaningful career for someone who enjoys complex abdominal and pelvic surgery while also valuing clinic relationships, cancer care, gastrointestinal physiology, endoscopy, and the opportunity to improve problems that may have affected a patient’s health and confidence for years.
The specialty offers considerable variety within a focused anatomical area. A colorectal surgeon may perform a major cancer operation, care for a patient with chronic inflammatory bowel disease, treat an emergency obstruction, perform colonoscopy, repair an anal fistula, or help someone regain continence and independence.
The work can also be demanding. Pelvic operations may be lengthy and technically difficult, complications can substantially affect quality of life, and patients may face cancer recurrence, chronic disease, altered bowel function, or emotional challenges related to an ostomy.
Whether the career feels worthwhile depends on the work that gives you meaning and the challenges you are prepared to carry. The best understanding usually develops gradually through exposure to general surgery, colorectal clinic, cancer care, endoscopy, chronic disease, and postoperative recovery rather than from one procedure or one description of the specialty.
Frequently Asked Questions About Becoming a Colorectal Surgeon
How many years does it take to become a colorectal surgeon?
The traditional pathway takes approximately 14 years after high school, including four years of college, four years of medical school, five years of general surgery residency, and one year of colon and rectal surgery training.
Gap years, research years, dual-degree programs, leave, and other circumstances may extend the timeline.
How long is colorectal surgery training?
The accredited advanced program lasts 12 months after general surgery residency.
Is colorectal surgery a residency or a fellowship?
Accredited programs are officially called colon and rectal surgery residencies, although physicians commonly refer to the year as a colorectal surgery fellowship because it takes place after general surgery residency.
What residency do colorectal surgeons complete first?
Colorectal surgeons ordinarily complete a categorical general surgery residency before entering an accredited colon and rectal surgery program.
Are colorectal surgeons board certified?
Eligible physicians may pursue certification through the American Board of Colon and Rectal Surgery after completing the required general surgery and colorectal training and satisfying the applicable written and oral examination requirements.
Is a colorectal surgeon the same as a proctologist?
Proctologist is an older term that was traditionally used for physicians treating rectal and anal disease.
The modern specialty is called colon and rectal surgery, and physicians in the field are commonly called colorectal surgeons.
Do colorectal surgeons perform colonoscopies?
Yes. Accredited training includes diagnostic and therapeutic colonoscopy, along with flexible sigmoidoscopy, rigid proctoscopy, and anoscopy.
Do colorectal surgeons treat colon and rectal cancer?
Yes. Colorectal surgeons diagnose and surgically treat colon, rectal, and anal cancers while coordinating care with medical oncologists, radiation oncologists, radiologists, pathologists, gastroenterologists, and other specialists.
Do colorectal surgeons give chemotherapy?
Medical oncologists generally prescribe chemotherapy, immunotherapy, targeted therapy, and other systemic cancer treatments.
Colorectal surgeons work with the oncology team to determine how an operation should be timed around those treatments.
Do colorectal surgeons treat inflammatory bowel disease?
Yes. Colorectal surgeons treat surgical complications of Crohn disease and ulcerative colitis and work closely with gastroenterologists to determine when an operation may be beneficial.
Do colorectal surgeons treat hemorrhoids?
Yes. Hemorrhoids are among the anorectal conditions treated by colorectal surgeons, although many patients can be managed without an operation.
Do colorectal surgeons treat constipation and fecal incontinence?
Yes. Their advanced training includes functional colorectal and pelvic-floor disorders, including constipation, pelvic outlet dysfunction, fecal incontinence, and rectal prolapse.
Can a general surgeon perform a colectomy?
Yes. General surgery residency includes abdominal and gastrointestinal surgery, and many general surgeons perform colon resections.
A colorectal surgeon has additional concentrated training in complex colon, rectal, anal, and pelvic-floor disease.
Is colorectal surgery competitive?
The level of competition varies among application cycles and programs. Clinical performance during general surgery residency, operative development, mentorship, letters of recommendation, research, professionalism, and fit with the specialty may all influence the application.
Do I need research to become a colorectal surgeon?
Research is not an absolute requirement at every stage, although it can strengthen an application and may be particularly useful for residents interested in academic surgery, cancer research, inflammatory bowel disease, outcomes, or surgical innovation.
Can both M.D. and D.O. physicians become colorectal surgeons?
Yes. Graduates of M.D. and D.O. medical schools can complete general surgery and accredited colon and rectal surgery training when they meet the applicable program, licensing, and certification requirements.
What should I major in to become a colorectal surgeon?
There is no required undergraduate major. Students may choose nearly any field as long as they complete the prerequisite courses required by the medical schools where they plan to apply.
Can colorectal surgeons have a good work-life balance?
Work-life balance varies by practice. Many operations are scheduled, but surgeons may still cover emergencies, postoperative complications, nights, weekends, and holidays.
The size of the group, call arrangement, clinic volume, academic expectations, and type of hospital often influence lifestyle as much as the specialty itself.
What should I read next?
The broader training pathway begins with my guide on how to become a general surgeon, while the following articles can help you compare colorectal surgery with related careers: