Colon resection is a surgical procedure performed to remove the diseased part of the large intestine. It is most commonly used in conditions such as colon cancer, diverticulitis, or bowel obstruction, with the goal of improving health and quality of life.

After the affected segment is removed, the two healthy ends of the bowel are usually reconnected. This reconnection is called an anastomosis and helps maintain normal digestive function. In some situations, however, a temporary or permanent stoma may be required.

The postoperative recovery process is closely related to how bowel function readjusts. A nutrition plan is typically arranged to support digestive adaptation, and patients are monitored closely for infection risk and other complications.

Possible complications after colon resection include bleeding, infection, and anastomotic leakage. For this reason, careful evaluation of risk factors before surgery and regular follow-up after surgery are essential.

What You Need to Know Information
Definition Colon resection is the surgical removal of a portion of the large intestine (colon).
Purpose Performed to treat conditions such as cancer, diverticulitis, Crohn’s disease, ulcerative colitis, bowel obstruction, or trauma.
Surgical Approaches Open surgery (laparotomy) and minimally invasive (laparoscopic) techniques are available.
Types of Resection Includes right/left hemicolectomy, sigmoid colectomy, subtotal colectomy, and total colectomy.
Duration Usually lasts about 1.5–4 hours, depending on the technique and complexity of the case.
Anesthesia Performed under general anesthesia.
Hospital Stay Typically 4–7 days. This may be shorter with laparoscopic surgery.
Recovery Full recovery usually takes 4–6 weeks. Physical activity restrictions apply during the first weeks.
Possible Complications Infection, bleeding, anastomotic leak, bowel obstruction, hernia, and wound healing problems may occur.
Diet Plan Starts with a liquid diet and progresses gradually to solid foods. Fiber intake is adjusted according to medical advice.
Bowel Function Temporary diarrhea, constipation, or gas problems may occur and typically improve over time.
Stoma Formation If necessary, a temporary or permanent colostomy/ileostomy may be created.
Pathology The removed colon tissue is examined to confirm diagnosis and/or determine staging.
Follow-up Postoperative surgical follow-ups and, if needed, oncology follow-up are arranged. Regular colonoscopy may be recommended.
Quality of Life Quality of life often improves when the disease is controlled. If a stoma is present, an adaptation period may be needed.

You can contact Prof. Dr. Ebru Soy, one of the doctors performing Large Intestine Surgery in Ankara, to get information about Large Intestine Surgery prices, the process, and the hospital where Large Intestine Surgery is performed.

Ankara Large Intestine Surgery
Prof. Dr. Ebru Ayvazoğlu Soy

Education;

High School: TED Ankara College – Graduation: 1998
Faculty of Medicine: Hacettepe University Faculty of Medicine – Graduation: 2005
Specialization: General Surgery Residency Training – Başkent University Faculty of Medicine, Department of General Surgery – 2012

Post-Specialization Career;

2012–2014: Compulsory public service – Muş State Hospital
January 2014 – November 2022: Başkent University Faculty of Medicine, Department of General Surgery – Served as a specialist physician and later as an academician
March 2016 – October 2017: Başkent University Istanbul Practice Hospital – Deputy Director Responsible for Liver Transplantation
June 2020 – November 2022: Başkent University Ankara Hospital – Director of the International Patient Department

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In Which Situations Is Colon Resection Necessary?

The decision for colon surgery can be made for many different health problems. Sometimes it is planned after careful evaluation, while in other cases it becomes unavoidable to address an emergency.

One of the most common reasons is colon cancer. The goal of surgery is to remove not only the tumor but also nearby lymph nodes that may carry microscopic spread. This helps determine the exact stage and improves treatment success. Colon resection may also be required for large, high-risk polyps that cannot be removed safely during colonoscopy.

Diverticular disease is another frequent reason. Diverticulitis is inflammation of small pouches in the bowel wall. While it is often treated with medications, surgery is required when serious complications occur. These include:

  • Perforation (a hole in the bowel)
  • Abscess formation in the abdomen
  • Fistula to nearby organs such as the bladder
  • Complete bowel obstruction
  • Severe bleeding that cannot be controlled
  • Frequent recurrent attacks that reduce quality of life

Inflammatory bowel diseases (IBD) such as Crohn’s disease and ulcerative colitis may also require surgery. In Crohn’s disease, surgery does not cure the condition but helps manage complications. In ulcerative colitis, removing the entire colon can eliminate the disease. Indications in this group include:

  • Failure to respond to medical therapy
  • Strictures that block intestinal passage
  • Uncontrolled infection or abscess formation
  • Development of cancer or precancerous changes

Toxic megacolon is an emergency where the colon becomes dangerously enlarged, with a high risk of perforation.

Sometimes colon resection is decided urgently in the emergency setting. In these cases, the priority is life-saving treatment rather than the most cosmetic repair. Emergencies include:

  • Complete bowel obstruction due to a tumor or another cause
  • Severe traumatic bowel injury that cannot be repaired
  • Loss of blood supply leading to bowel death (ischemia/gangrene)

Which Part of the Colon Is Removed During Colon Resection?

The type of surgery depends on the location and extent of disease. The surgeon removes the affected segment along with a safety margin of healthy tissue.

For example, if the disease is in the cecum or ascending colon, the right side of the colon is removed—this is called a right hemicolectomy. The last part of the small intestine is then connected to the remaining colon.

If the disease involves the descending colon or sigmoid colon, the left side is removed—this may be called a left hemicolectomy or sigmoid colectomy. The remaining bowel ends are reconnected.

More rarely, in conditions like familial polyposis syndromes or widespread ulcerative colitis, removal of the entire colon may be necessary. This is called a total colectomy.

Which Surgical Methods Are Used for Colon Resection?

Today, colon resection can be performed using three main approaches. Each has its own advantages and limitations, and the best choice depends on the patient, the disease, and the surgeon’s experience.

Traditional Open Surgery

This is the classic method, performed through a larger abdominal incision. It provides direct access and a broad view. It can be the most reliable option in emergencies, in widespread infection, in severe adhesions, or when the tumor is very large.

Advantages include:

  • Rapid access to the abdomen
  • Wide visualization and working space
  • Ability to assess tissues by direct touch

Disadvantages may include:

  • Larger scar
  • More postoperative pain
  • Longer hospital stay
  • Slower recovery
  • Higher risk of incisional hernia

Laparoscopic Surgery (Minimally Invasive)

Also called “keyhole surgery,” this method uses several small (0.5–1 cm) incisions instead of one large cut. A camera and specialized instruments are inserted, and the abdomen is inflated with gas to create working space. The surgeon operates while viewing a monitor.

Key benefits include:

  • Less postoperative pain
  • Smaller and more cosmetic scars
  • Shorter hospital stay
  • Faster return to daily life
  • Less blood loss
  • Lower infection risk

Challenges may include:

  • Long learning curve for surgeons
  • Reduced depth perception with 2D imaging in some systems
  • Limited instrument range of motion
  • Possible conversion to open surgery in difficult cases

Robotic Surgery

Robotic surgery is the most advanced minimally invasive option. Like laparoscopy, it uses small incisions, but the surgeon controls robotic arms from a nearby console using a high-definition 3D view. Robotic instruments can mimic (and refine) wrist-like movements with very high precision.

Advantages compared with laparoscopy may include:

  • Magnified 3D vision (improved depth perception)
  • Elimination of hand tremor
  • Wristed instruments with wide-range motion
  • Superior maneuverability in narrow, deep spaces
  • More ergonomic working conditions for the surgeon

With these benefits, robotic surgery may result in:

  • Less blood loss
  • Lower conversion rates to open surgery
  • More precise work in areas where nerve preservation is critical

Potential disadvantages include:

  • Higher overall cost
  • Slightly longer operative time during the learning phase
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Ankara Large Intestine Surgery
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How Do Patients Prepare Before Colon Resection?

Preoperative preparation is as important as the surgery itself. Modern approaches known as ERAS (Enhanced Recovery After Surgery) aim to optimize the patient’s condition before surgery and improve postoperative outcomes.

Key steps often include:

  • Detailed tests (colonoscopy, CT scan, blood tests)
  • General health evaluation by the anesthesia team
  • Nutritional optimization (protein supplementation if needed)
  • Stopping smoking and alcohol
  • Simple physical activity such as breathing exercises

The traditional “nothing by mouth after midnight” rule has evolved. Under ERAS protocols, common practices may include:

  • Allowing clear fluids (water, apple juice) up to 2 hours before surgery
  • Using carbohydrate drinks preoperatively to support energy stores
  • Stopping blood thinners under medical supervision
  • Bowel cleansing with laxatives when indicated
  • Oral antibiotics to reduce infection risk in selected cases
  • Showering with antiseptic soap the night before and the morning of surgery

What Does the Surgeon Focus on During Colon Resection?

The surgeon’s main goal is to remove the disease thoroughly while preserving normal tissues and function as much as possible.

In cancer surgery, the tumor and its surrounding fatty tissue containing blood vessels and lymph nodes are removed as a single intact specimen. This principle helps prevent the spread of cancer cells and supports accurate staging.

After removing the diseased section, the two healthy bowel ends are reconnected. This is called an anastomosis. Ensuring that the connection is tension-free, well-supplied with blood, and leak-proof is vital.

Sometimes creating an anastomosis may be too risky. In these situations, bringing one bowel end to the abdominal wall (creating a stoma) can be safer. This is not a failure—rather, it is a life-saving strategy.

Two main scenarios may require a stoma:

  • Emergency, infected conditions (damage-control strategy)
  • Protecting a high-risk anastomosis (preventive strategy)

Depending on the case, a stoma can be temporary or permanent. Temporary stomas are often closed with a simpler operation after a few months.

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    How Does Recovery Progress After Colon Resection?

    Postoperative care focuses on helping patients return to normal life as quickly and safely as possible.

    Pain control is essential not only for comfort but also to enable early movement. With modern pain management strategies, reliance on opioids such as morphine (which can slow bowel function) is reduced. Many patients are encouraged to stand and walk on the first postoperative day—sometimes even the same evening. Early mobilization is one of the most effective ways to prevent lung problems and blood clots.

    Nutrition is also started as early as possible. Many patients begin with liquids on the day after surgery and progress toward a normal diet quickly as tolerated. This helps the intestines resume function sooner.

    Discharge typically requires meeting criteria such as:

    • Pain controlled with oral medications
    • Ability to tolerate solid foods
    • Ability to walk independently

    Return of bowel function (passing gas and/or stool) is also an important milestone.

    After discharge, patients should watch for “red flag” symptoms and contact their doctor promptly if they occur:

    • Fever above 38°C (100.4°F)
    • Increasing abdominal pain
    • Nausea and vomiting
    • Wound drainage, redness, or swelling
    • Shortness of breath or chest pain

    What Are the Long-Term Effects and Risks After Colon Resection?

    Colon resection is a major operation, and like any surgery it carries both early and late risks.

    The most serious early complications include:

    • Anastomotic leak
    • Intra-abdominal or wound infection
    • Bleeding
    • Deep vein thrombosis (blood clot in the leg veins)
    • Pulmonary embolism (clot traveling to the lungs)
    • Ileus (temporary bowel paralysis)

    In the long term, adhesions in the abdomen can cause pain or bowel obstruction years later. An incisional hernia may develop at the surgical scar.

    The most common long-term change is altered bowel habits. Since part of the colon is removed, some patients may have more frequent bowel movements, diarrhea, or constipation. Over time, many people adapt by learning what diet and routines work best for their “new normal.”

    In surgeries performed deep in the pelvis—such as for rectal cancer—nerves responsible for sexual function and urinary control can be at risk. Injury to these nerves may cause long-term sexual dysfunction or urinary problems. This is one area where robotic surgery can provide an advantage: magnified 3D vision and highly precise, tremor-free instrument control may help protect delicate nerve networks. This is not only a technological benefit but also a step aimed at preserving long-term quality of life.

    For patients who live with a permanent stoma, modern stoma systems and proper education make daily life highly manageable. Many patients return to active social, professional, and personal lives while feeling secure and comfortable.

    Frequently Asked Questions

    Colon resection is performed to remove diseased bowel segments in conditions such as tumors, large polyps, diverticulitis, ulcerative colitis, or bowel obstruction. The goal is to control the disease and preserve digestive function.

    Preparation may include bowel cleansing, antibiotics to reduce infection risk, and fasting for a certain period. The patient’s overall health and chronic conditions are also evaluated before surgery.

    After surgery, bowel function may slow temporarily. A liquid diet is started first, followed by gradual transition to solid foods. Over time, bowel function often improves, but some patients may experience lasting changes in bowel habits.

    Possible complications include infection, bleeding, anastomotic leak, and temporary bowel obstruction. These issues are often manageable with early recognition and appropriate treatment.

    During recovery, low-fiber and easy-to-digest foods are generally recommended. Gas-producing foods should be limited, and adequate fluid intake is important. Diet can be gradually normalized under medical guidance.

    Recovery typically takes about 4 to 6 weeks. During this time, wound care, nutrition, and physical activity should be managed carefully. The exact duration may vary depending on overall health.

    If the surgery is performed for colon cancer, removing the tumor completely can significantly reduce recurrence risk. Regular oncology follow-up and colonoscopy surveillance remain essential.

    Laparoscopic surgery uses smaller incisions, which usually means less pain, shorter hospital stay, and faster recovery. Open surgery requires a larger incision and is often preferred in more complex cases.

    No. A stoma is only needed in certain situations—especially when reconnection is not safe or when the anastomosis must be protected. It may be temporary or permanent depending on the case.

    Changes in body function and daily routines can cause anxiety or low mood in some patients. Support from mental health professionals, dietitians, and physiotherapists can make adaptation easier.

    Depending on the type of procedure and the patient’s condition, colon surgery typically lasts about 2 to 4 hours. The scope of resection, tumor removal, or obstruction treatment can affect the duration. Minimally invasive techniques may be associated with faster recovery, but operative time can vary.

    For colon-related health problems, patients should consult a gastroenterology specialist. If surgery is required, the patient is referred to a general surgeon.