Postoperative TEM complications for the treatment of rectal neoplasia are frequent but mild: risk factors and time behavior study

Postoperative TEM complications for the treatment of rectal neoplasia are frequent but mild: risk factors and time behavior study
Marques C.F.1, Nahas, C.S.1, Bustamante-Lopez, L.A.1, Ribeiro Jr, U.1, Pinto, R.A.1, Nahas, S.C.1
1Hospital das Clínicas da Faculdade de Medicina da USP, Instituto do Câncer do Estado de São Paulo, São Paulo, Brazil

Introduction: In 1983, Buess et al introduced a novel surgical approach for the resection of large rectal adenomas: namely transanal endoscopic microsurgery (TEM). Since its introduction, many centers have adopted TEM as the new standard surgical approach to treating both large rectal adenomas and early rectal cancer.

Objective: To evaluate risk factors associated with postoperative complications after TEM local resection for rectal neoplasia.

Methods: All patients were treated using a TEO© device and harmonic scalpel according to the Buess technique. We prospectively collected demographic and tumor characteristics and information on complications using the Clavien–Dindo classification.

Results: Fifty-three patients were treated. There was no mortality. Overall morbidity rate was 50%. Patients with lesions under the fi rst rectal valve had more complications than those with higher ones (P = 0.034). Patients submitted to neoadjuvant chemoradiotherapy (CRT) had 24 times more chance of presenting grade II complications (P = 0.002), and 7.03 times more chance of grade III complications (P = 0.098). When the defect was treated using the TEM device to perform or help with the rectal suture there was a 16-fold lower chance of having grade III complications (P =
0.043). There was no specifi c time behavior of complications.

Conclusions: TEM postoperative complications are acceptable and usually self-limited. Patients submitted to neoadjuvant CRT, with distal lesions, and submitted to conventional suture warrant greater attention. There did not appear to be any time behavior of complications.

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