When it is recommended
The segment removed is the descending and sigmoid colon. Cancer of the left colon or sigmoid; complicated diverticular disease (perforation, fistula, stricture); recurrent diverticulitis causing major symptoms; and some large polyps or benign strictures.
How the operation is performed
Laparoscopic where feasible. The left colon is mobilised, the inferior mesenteric vessels are divided with the lymph nodes, and the segment is removed. The remaining transverse colon is joined to the upper rectum. Operating time is typically 2–3 hours.
Recovery
Hospital stay 4–6 days. Normal diet in about a week, full recovery 4–6 weeks.
Bowel habits afterwards
Stools may be slightly firmer initially. Most patients return to their pre-surgery pattern within 2–3 months.