Is transanal endoscopic microsurgery (TEM) a valid treatment for rectal tumors?

Background: In 1983 G. Buess, in Germany, developed transanal endoscopic microsurgery (TEM), a new minimally invasive technique for the treatment of rectal tumors. Methods: Rectal lesions are excised through a modified rectoscope of 40 mm in diameter under stereoscopic control in the gas-dilated rectal cavity. Full-thickness excision, partial-wall excision, or mucosectomy can be performed, Seventy-one patients were treated with the TEM technique in our department. Major complications were observed in one patient (1.4%). No mortality was reported. Results: Histological examination revealed 40 (56.3%) villous adenomas, 6 (8.4%) PT1; 17 (23.9%) pT2: 5 (7%) pT3 carcinomas; and 3 ((4.2%) other lesions. The recurrence rate was 2.8% or adenomas and 2.8% for carcinomas. The overall survival at mean follow-up of 17 months was 96.4%. Conclusions: The advantages of TEM are less or no postoperative pain, unrestricted mobility, short hospitalization, quick rehabilitation, and absence of skin scars.