Abstract
The management of lower rectal cancers is a therapeutic challenge both from the oncological and functional viewpoints. The aim of this study is to assess the oncological results and postoperative morbidity after transanal total mesorectal excision (TaTME) for low rectal cancer.In this monocentric retrospective study, we compared the quality of carcinologic resection and the morbidity-mortality between a group of 20 patients undergoing TaTME and 21 patients treated by abdomino-perineal resection (APR) between 2016 to 2019.More patients had a positive circumferential resection margin (CRM) (≤ 1 mm) in the APR group (47.6% vs. 5%; P < 0.0036). The difference in the rates of grades I-II and III-IV complications (Clavien-Dindo classification) between the two groups was not statistically significant (50% vs. 57.1% and 5% vs. 9.5% in TaTME and APR, respectively; P = 0.7579, P = 1.00). The median follow-up was longer in the TaTME group (20 months vs. 11 months; P = 0.58). The local recurrence rate did not differ between the two groups (5% vs. 4.8%; P = 1.00)TaTME provides a reliable total mesorectal resection with an acceptable CRM. However, like any new technique, it requires experience and the learning curve is long.
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