Rectal cancer surgery: rectal resection explained

Rectal resection removes the part of the rectum containing cancer and reconnects or redirects the bowel when needed.

The operation may be called a low anterior resection or an abdominoperineal resection, depending on where the tumour sits and whether the anus can be preserved. A temporary or permanent stoma may be part of the plan.

You have an assessment of fitness for surgery, scans to map the cancer, and a discussion of the planned operation. Surgery is done under general anaesthesia through keyhole, robotic or open techniques, chosen according to the anatomy and surgical plan.

The surgeon removes the tumour with a margin of surrounding tissue and nearby lymph nodes where appropriate. If bowel ends can be safely joined, an anastomosis is created; otherwise, the bowel is brought to the abdominal wall as a stoma.

Pain, tiredness, reduced appetite, temporary bowel changes and difficulty passing urine can occur after surgery. Pelvic surgery can also affect sexual function and, for some people, bladder control.

Seek urgent assessment for fever, increasing abdominal pain, persistent vomiting, a swollen abdomen, heavy bleeding, chest pain, shortness of breath, or a stoma that becomes very dark. These can signal complications requiring prompt care.

Surgery is a central treatment for rectal cancer when the cancer can be removed safely. Its role depends on the stage and location of the tumour, the relationship to nearby structures, and whether radiation or systemic treatment is advised before or after the operation.

The team reviews the removed tissue to guide follow-up and further care. Your expected result is discussed in terms of cancer control, bowel function, stoma needs and the effect of any combined treatments.

A stoma nurse can mark a suitable site before surgery and teach you how to manage the pouch afterwards. If a temporary stoma is planned, its later reversal depends on healing and the wider treatment plan.

Rectal resection may be offered to people with Rectal Cancer when surgery is suitable for the tumour and their overall health. The choice also considers continence, prior pelvic treatment, inflammation, nutritional status and personal preferences.

Before admission, you may receive instructions about bowel preparation, food and drink, medicines, blood-thinning treatment and stoma planning. In hospital, the surgical team confirms the plan and gives anaesthesia.

After the operation, staff monitor pain, circulation, urine output and bowel recovery. Early walking, breathing exercises and guidance from dietitians or stoma nurses help support recovery.

Hospital discharge happens when pain is manageable, you can drink and eat enough, and the team is satisfied with your recovery plan. Bowel frequency, urgency and stool consistency can take time to settle; contact details for the surgical team should stay accessible.

Risks include bleeding, infection, blood clots, injury to nearby structures, a leak from a bowel join, blockage, and problems with stoma function. Smoking, diabetes, nutrition and other health conditions can influence recovery, so the team may address these before surgery.

Some people need radiotherapy, systemic medicines or both as part of a combined plan. In selected circumstances, clinicians may discuss monitoring after a strong response to non-surgical treatment; this requires careful follow-up and is not suitable for everyone.

Ask whether your care includes colorectal surgery, anaesthesia, oncology, imaging, pathology, dietetics and stoma nursing. A useful appointment question is how the proposed operation could affect bowel control, sexual function and daily stoma care.