4.5 Article

Transverse Coloplasty Pouch versus Straight Coloanal Anastomosis Following Intersphincteric Resection for Low Rectal Cancer: the Functional Benefits May Emerge After Two Years

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SPRINGER
DOI: 10.1007/s11605-022-05565-w

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Intersphincteric resection; Rectal cancer; Functional outcome; Transverse coloplasty pouch; Straight coloanal anastomosis

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This study compared the oncological and functional outcomes of two different bowel reconstruction procedures (TCP or SCAA) following ISR for low rectal cancer. The results showed that TCP was a safe technique that may decrease bowel dysfunction compared with SCAA 2 years after ileostomy closure.
PurposeThis study aimed to compare the oncological and functional outcomes following intersphincteric resection (ISR) with transverse coloplasty pouch (TCP) or straight coloanal anastomosis (SCAA) for low rectal cancer.MethodsA single-center retrospective analysis was performed on patients with low rectal cancer who received ISR between January 2016 and June 2021. The primary endpoint was to compare the outcomes of bowel function within 1 year, 1 to 2 years, and 2 years after ileostomy closure in patients undergoing two different bowel reconstruction procedures (TCP or SCAA). The postoperative complications and oncological results were also compared between the two groups.ResultsA total of 235 patients were enrolled in this study (SCAA group: 166; TCP group: 69). There was no significant difference in complications, including grades A-C anastomotic leakage (9.6% vs 15.9%), 3-year local recurrence rates (6.1% vs 3.9%), disease-free survival (82.4%vs 83.8%), or overall survival (94.1% vs 94.7%) between the two groups. Two years after ileostomy closure, 52.7% of patients in the SCAA group were assessed as having major low anterior resection syndrome (LARS), which was significantly higher than the 25.9% of patients in the TCP group (P = 0.014), but no difference was found prior to 2 years. Similar differences were seen in Wexner scores 2 years after surgery (P = 0.032). Additionally, TCP was an independent protective factor for postoperative bowel function as measured by both the LARS (OR, 0.28; 95% CI, 0.10-0.82; p = 0.020) and Wexner scoring (OR, 0.28; 95% CI, 0.09-0.84; p = 0.023).ConclusionThis study suggests that TCP is a safe technique that may decrease bowel dysfunction after ISR for low rectal cancer compared with SCAA 2 years after ileostomy closure.

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