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Sigmoid colectomy - the operation, done properly.

Elective and semi-urgent removal of the sigmoid colon - laparoscopic, robotic or open - with primary anastomosis where safe. A high-volume consultant colorectal surgeon, an enhanced-recovery unit, and the plan explained before you consent.

See indicative pricing
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Indicative pricing

What a private sigmoid colectomy costs in the UK.

Indicative ranges across our vetted UK partners.

In short

£16,000–£25,000 all-in, 3–5 nights in hospital.

Procedure Indicative range
Laparoscopic sigmoid colectomy (benign) £16,000–£22,000
Laparoscopic sigmoid colectomy (cancer) £18,000–£25,000
Robotic-assisted sigmoid colectomy £22,000–£32,000
Open sigmoid colectomy £18,000–£26,000
Hartmann's procedure (elective) £19,000–£28,000
With defunctioning loop ileostomy + £2,500–£4,500
Colorectal consultation only £250–£450

Prices vary by hospital, by the consultant, by approach (laparoscopic, robotic, open), and by ITU/HDU need. Robotic and cancer cases with defunctioning ileostomy sit at the top of the range.

The problem

The right approach, the right anastomosis, and a recovery plan that actually shortens the stay.

Sigmoid colectomy is where routine general surgery quietly under-delivers - laparoscopy skipped without reason, ERAS ignored, and stoma decisions made in the middle of the night.

  • Could it be laparoscopic or robotic?

    Most elective sigmoid resections are keyhole. Open is the fall-back, not the default. We say so before booking a midline.

  • Anastomosis or stoma?

    A well-prepared elective patient usually gets a primary join. A stoma is a safety decision - we discuss the odds honestly, before you sign.

  • ERAS is a pathway, not a slogan

    Fluid balance, opioids, feeding, catheters and mobilisation - every element scored. That is how a 7-night stay becomes 3.

When it helps

When sigmoid colectomy is the right operation.

The indications we see most, plus the one red flag that means an emergency admission rather than an elective list.

  • Sigmoid cancer

    Confirmed on colonoscopy biopsy, staged on CT ± MRI, planned through a colorectal MDT.

  • Recurrent diverticulitis

    Two or more episodes with impact on life or work - where elective resection now avoids an emergency one later.

  • Complicated diverticular disease

    Stricture, colovesical fistula, chronic phlegmon or bleeding not settled by conservative measures.

  • Sigmoid volvulus

    Recurrent twisting of a redundant sigmoid - elective resection prevents strangulation.

  • Benign strictures

    Post-diverticular or post-ischaemic strictures causing partial obstruction.

  • Deep sigmoid endometriosis

    Nodular sigmoid disease with obstructive symptoms, planned jointly with a gynaecologist.

  • Large or high-risk polyps

    Sigmoid polyps not safely removable endoscopically, or with high-grade dysplasia.

  • Red flag: peritonitis or free perforation

    Rigid abdomen, sepsis or free gas on CT is emergency territory - A&E and blue-light transfer, not an elective list.

Options

Approach and technique both depend on the indication.

What each option involves - approach (laparoscopic, robotic, open) and technique (primary anastomosis, Hartmann's, defunctioning stoma).

  • Laparoscopic sigmoid colectomy

    The default for benign and most cancer cases. 4–5 ports and a small extraction incision. 3–5 nights, quickest return to normal.

  • Robotic-assisted

    Better dexterity in the deep pelvis and for obese or previously operated patients. Comparable outcomes; adds theatre time and cost.

  • Open (midline laparotomy)

    Reserved for emergencies, extensive adhesions, very large tumours, or when laparoscopy is unsafe to convert to open safely.

  • Primary anastomosis

    Stapled or hand-sewn colorectal join at the top of the rectum. The standard for elective, well-prepared patients.

  • Hartmann's procedure

    Resection with end colostomy and closed rectal stump - used when a safe primary join is not possible. Reversible later in most cases.

  • Defunctioning loop ileostomy

    Temporary stoma to protect a low or high-risk anastomosis. Closed at 3–6 months once healing is confirmed.

  • En-bloc resection

    For fistulating disease - sigmoid taken with the affected bladder patch, uterus, vaginal wall or small bowel loop as a single specimen.

  • Extended left colectomy

    Where the disease crosses the descending colon or the blood supply demands a longer resection than sigmoid alone.

Safety and recovery

What to expect afterwards - honestly.

Sigmoid colectomy is well-established. The things worth planning are the approach, whether a stoma is likely, and the ERAS pathway that keeps the stay short.

  • Anastomotic leak

    The one we plan against - around 2–5%. Signs: fever, tachycardia, pain out of proportion, or a change on day 3–5. Same-day CT and a low threshold to re-operate.

  • Bleeding

    Under 2% needing return to theatre. Blood is grouped and saved; transfusion is uncommon in elective laparoscopic cases.

  • Wound and chest infection

    Wound infection 3–8% (higher in open), chest infection 2–5%. Early mobilisation and chest physio matter more than antibiotics.

  • DVT and PE

    Prophylactic heparin and stockings from admission, continued 28 days for cancer resections. Calf pain, breathlessness or chest pain is same-day A&E.

  • Stoma - planned or otherwise

    An elective plan lists the probability up front. A defunctioning ileostomy is common in higher-risk joins. The stoma nurse sees you before, not after.

  • Ileus and slow return of bowel function

    Some slow-down is normal for 2–4 days. Persistent vomiting, distension or no flatus by day 4 needs review - not just patience.

  • Incisional hernia

    Long-term risk at the extraction or midline site - under 5% laparoscopic, up to 15% open. Mesh closure reduces this.

  • Sexual and urinary function

    Low sigmoidectomies close to the rectum can affect autonomic nerves. Discussed in cancer consent; uncommon in benign work.

  • Cancer outcomes

    Laparoscopic sigmoidectomy for cancer gives the same 5-year survival as open, with shorter stay and fewer complications - the trials are clear.

Reading your notes

Your notes in four parts. Read the last one first.

The letter you receive from the consultant keeps to the same shape.

  1. 01 Indication

    Why the operation was done

    The diagnosis, the imaging and endoscopic findings, and the decision that pushed you from surveillance to resection.

  2. 02 Technique

    Approach and findings

    Laparoscopic, robotic or open. What was seen in the abdomen. Whether the join was made and how it was tested.

  3. 03 Histology

    Pathology and staging

    For cancer: T and N stage, margins, lymphovascular invasion, mismatch repair status. For benign disease: confirmation and any incidental findings.

  4. 04 Impression

    Follow-up and surveillance

    Read this first: MDT decisions on adjuvant therapy where relevant, surveillance colonoscopy plan, stoma-reversal timing, and when to call.

Recognised by major UK insurers

BupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealix

Elective sigmoid colectomy is usually covered when medically indicated. Cancer resections are covered under standard oncology cover.

Frequently asked

Everything we get asked about sigmoid colectomy.

Quick answers on approach, stomas, recovery, cancer outcomes and cost.

  • How long will I be in hospital?

    Laparoscopic and robotic sigmoid colectomies typically leave hospital day 3–5 on an enhanced-recovery pathway. Open is 5–8 nights. Faster is not always better - we discharge when eating, mobilising and pain is controlled on tablets.

  • Will I need a stoma?

    Most elective sigmoid colectomies are done with a primary anastomosis and no stoma. Where the join is very low, the tissues are inflamed, or the patient is high-risk, a temporary defunctioning loop ileostomy protects the join for 3–6 months, then is reversed.

  • Laparoscopic, robotic or open - which is right for me?

    Most elective cases are laparoscopic. Robotic helps in the deep pelvis, in obesity, and in re-do surgery. Open is reserved for emergencies, extensive adhesions, or very large tumours. Cancer outcomes are equivalent across approaches in trained hands.

  • When can I go back to work?

    Desk work: 2–3 weeks laparoscopic and robotic, 4–6 weeks open. Physical work: 6–8 weeks. Driving when an emergency stop is pain-free - usually 1–2 weeks laparoscopic, 4–6 weeks open.

  • What are the cancer survival numbers?

    Elective sigmoid cancer resection with clear margins and no lymph-node involvement (T1–T2, N0) has a 5-year survival above 90%. Node-positive disease sits around 70% with adjuvant chemotherapy. The MDT gives you the numbers for your exact stage.

  • How much does private sigmoid colectomy cost in the UK?

    Roughly £16,000–£25,000 laparoscopic, £22,000–£32,000 robotic, £18,000–£26,000 open, £19,000–£28,000 for a Hartmann's. Add £2,500–£4,500 for a defunctioning ileostomy.

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