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Prospective, randomized trial comparing sigmoid vs. descending colonic J-pouch after total rectal excision
S M Heah1, F Seow-Choen, K W Eu
1Department of Colorectal Surgery, Singapore General Hospital.
Diseases of the Colon and Rectum
|June 18, 2002
Summary
Sigmoid and descending colon J-pouches yield comparable bowel function following rectal cancer surgery. This study found no significant differences in function or anorectal physiology between the two pouch types.
Area of Science:
- Colorectal Surgery
- Surgical Oncology
- Gastroenterology
Background:
- Rectal cancer treatment often involves ultralow anterior resection (UAR).
- J-pouch reconstruction is a common technique following UAR.
- The choice of bowel segment for J-pouch creation (sigmoid vs. descending colon) may impact functional outcomes.
Purpose of the Study:
- To compare the bowel function of sigmoid versus descending colonic J-pouches.
- To evaluate anorectal physiology after J-pouch reconstruction using different colonic segments.
- To assess functional outcomes in patients undergoing UAR for rectal cancer.
Main Methods:
- A prospective, randomized trial involving 92 patients undergoing UAR for rectal cancer.
- Patients were randomly assigned to either a sigmoid or descending colon J-pouch.
- Bowel function and anorectal physiology were assessed at multiple time points post-ileostomy closure.
Main Results:
- No statistically significant differences were observed between sigmoid and descending J-pouch groups.
- Key functional parameters including stool frequency, incontinence, and urgency were similar.
- Anorectal physiology measurements also showed no significant variations between the two groups.
Conclusions:
- Both sigmoid and descending colon J-pouches provide similar bowel function after UAR for rectal cancer.
- The choice of bowel segment for J-pouch creation does not appear to influence functional outcomes.
- These findings support the use of either segment based on surgical considerations.