What Is Colorectal Surgery? A Patient's Guide

June 17, 2026
Patient Guide
Colorectal surgery is a specialty focused on the colon, rectum, and anus. It's broader and more nuanced than most people realize.
If you've been referred to a colorectal surgeon, here's what that actually means, the conditions they treat, and what to expect when surgery is on the table.

Hearing the word "surgery" in connection with anything related to the bowels can be alarming. Most people don't know what colorectal surgery actually involves, what kinds of conditions it treats, or how a colorectal surgeon differs from a general surgeon. This guide is designed to clear that up in plain language.

The short version: colorectal surgery is a specialized field focused on the colon, rectum, and anus. The conditions it treats range from very common (hemorrhoids, fissures) to serious (colorectal cancer, inflammatory bowel disease). Many of those conditions never require surgery at all. When surgery is the right answer, modern techniques mean smaller incisions, faster recovery, and better outcomes than the older procedures most people imagine.

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What does a colorectal surgeon actually do?

A colorectal surgeon is a doctor who has completed general surgery training and then additional fellowship training (usually one to two years) specifically focused on diseases of the colon, rectum, and anus. They're certified by the American Board of Colon and Rectal Surgery (ABCRS), a designation that signals real specialization in this area.

Colorectal surgeon
Training: General surgery residency plus 1 to 2 years of colorectal fellowship.
Board certification: ABCRS (American Board of Colon and Rectal Surgery).
Focus: Exclusively or primarily on conditions of the colon, rectum, and anus.
Volume: Performs colorectal procedures regularly, often weekly.
General surgeon doing colorectal work
Training: General surgery residency, without specialized fellowship.
Board certification: American Board of Surgery (general).
Focus: Wide range of abdominal and other procedures.
Volume: May do colorectal procedures occasionally alongside other surgeries.

Both kinds of surgeons may be competent for straightforward cases. But for complex situations, especially cancer surgery, anything involving the rectum or pelvis, and inflammatory bowel disease, the depth of experience that comes with a colorectal specialist makes a real difference.

What kinds of conditions does colorectal surgery treat?

The range is wider than most people realize. Not all of these conditions require surgery, but they're all within the colorectal surgeon's scope.

Hemorrhoids
Swollen veins inside or around the anus. Most are managed without surgery, but persistent or severe cases may benefit from procedures like rubber band ligation or hemorrhoidectomy.
Anal fissures
Small tears in the lining of the anal canal. Most heal with conservative care; chronic fissures sometimes need procedural treatment.
Anal fistulas and abscesses
Infections that can form tunnels in the anal area. Surgery is often required to drain or repair them.
Colorectal cancer
The third most common cancer in both men and women in the US. Surgery is the primary treatment for most cases.
Diverticulitis
Inflammation of small pouches in the colon wall. Mostly managed without surgery, but severe or recurrent cases may need a colon resection.
Inflammatory bowel disease
Crohn's disease and ulcerative colitis. Surgery is sometimes needed for complications or for medication-resistant cases.
Rectal prolapse
When the rectum slips down through the anus. Surgical repair restores normal anatomy and function.
Fecal incontinence
Loss of bowel control. Many causes; treatments range from pelvic floor therapy to nerve stimulation to surgical repair.
Pilonidal disease
Cysts or sinuses at the base of the tailbone. Surgical removal is the definitive treatment.

When does surgery become the answer?

For most colorectal conditions, surgery is the last resort, not the first. The typical path looks like this: conservative care first (diet, fiber, hydration, sitz baths, topical treatments), then medications if needed, then in-office procedures, and finally surgery if all of those have been tried without success or if the condition is serious enough to skip ahead.

A few situations where surgery moves up the priority list: cancer, severe bleeding, intestinal obstruction, perforation (a hole in the bowel wall), abscess, and conditions that are causing significant quality-of-life issues despite other treatments.

Surgery for rectal prolapse

Rectal prolapse is one of the conditions colorectal surgeons treat that most people have never heard of. It happens when the rectum slips down and protrudes through the anus, or in some cases presses into the vaginal wall. It can be uncomfortable, embarrassing, and progressively worse over time.

Why rectal prolapse happens

The supporting tissues that hold the rectum in place weaken over time, often due to chronic straining, childbirth, age-related tissue laxity, or nerve damage. It's far more common in older women, though it can occur in men and younger patients too.

What it feels like

Common symptoms
A noticeable bulge of tissue protruding from the anus, especially during bowel movements
A feeling of fullness or incomplete emptying
Mucus discharge or bleeding
Fecal incontinence (in many cases)
Constipation or chronic straining

How surgery corrects it

Rectal prolapse doesn't heal on its own. Surgery is the only definitive treatment. There are two main approaches, and your surgeon will recommend the one that fits your case.

Abdominal approach (rectopexy)
Most durable
The rectum is repositioned and secured to the sacrum (the bone at the base of the spine), often using sutures or a mesh. Usually done laparoscopically or robotically. Lowest recurrence rates and good for most healthy patients.
Perineal approach
For higher-risk patients
The prolapsed segment of the rectum is removed through the anus, without an abdominal incision. Less invasive and a good option for older or frailer patients, with somewhat higher recurrence rates.

Recovery from rectopexy is typically 4 to 6 weeks for full activity, with most patients home from the hospital within 2 to 4 days. Long-term outcomes are excellent, with most patients reporting significant improvement in quality of life.

Surgery for hemorrhoids

Hemorrhoids are one of the most common conditions colorectal surgeons treat, but surgery is not the first step. The vast majority of hemorrhoids resolve with conservative care alone: more fiber, more water, sitz baths, and avoiding straining. When that's not enough, in-office procedures handle most of the rest. Surgery is reserved for severe or persistent cases.

When hemorrhoids actually need surgery

Surgery for hemorrhoids may be appropriate when: conservative treatment hasn't worked after several weeks; in-office procedures (like rubber band ligation) haven't resolved symptoms; hemorrhoids are Grade III or IV (significantly prolapsed or permanently outside the anus); large external hemorrhoids are causing ongoing discomfort; or a thrombosed external hemorrhoid is severely painful and not improving.

The main surgical options

Hemorrhoidectomy
Most definitive
Surgical removal of the hemorrhoidal tissue. Most effective for severe cases, with very low recurrence. Recovery involves more discomfort than less invasive options, typically 1 to 2 weeks before normal activity returns.
Stapled hemorrhoidopexy
For prolapsing internal hemorrhoids
A surgical stapler is used to remove excess tissue and reposition the hemorrhoids back inside the anal canal. Generally less painful than traditional hemorrhoidectomy with faster recovery.
Laser hemorrhoidoplasty (LHP)
Minimally invasive option
Laser energy is used to shrink the hemorrhoidal tissue from inside, without cutting or stitching. Less postoperative pain and faster recovery for select cases.
External hemorrhoid thrombectomy
For acute thrombosed hemorrhoids
An in-office procedure to remove the clot from a painful thrombosed external hemorrhoid. Most effective within 48 to 72 hours of onset. Provides immediate relief.

Your surgeon will discuss which option fits your situation best based on the type and severity of your hemorrhoids and your overall preferences.

What the surgical journey looks like

Whether you're facing a small in-office procedure or a more involved surgery, the general path is similar. You'll start with a thorough consultation and examination, where your surgeon will explain what's going on and your treatment options. If surgery is recommended, you'll have a chance to ask questions, get a second opinion if desired, and prepare for what's ahead.

The day of surgery itself is usually well-managed: pre-operative instructions, anesthesia, the procedure, and a recovery period either at home (for minor procedures) or in the hospital for a few days. Follow-up visits track healing and address any concerns.

The bottom line

Colorectal surgery covers a wide range of conditions, and most of what colorectal surgeons treat doesn't actually require surgery. When it does, modern minimally invasive techniques have made the experience dramatically easier than it used to be. The most important thing you can do is find a specialist who understands your specific situation, explains your options honestly, and helps you make a decision you feel good about.

Talk to a colorectal specialist.

Dr. Albert Chung is a board-certified colorectal surgeon focused on minimally invasive techniques and patient-centered care. Whether you're navigating a specific condition or just seeking clarity, a consultation is a good first step.

Book a consultationCall (714) 988-8690