[Technique and indications for sphincter-saving transanal resection in rectal carcinoma].

Using a transanal procedure, two different operative techniques are possible: the TEM technique (Transanal Endoscopic Microsurgery), which is more and more accepted in the world as method of choice for the local resection of adenomas and carcinomas pT1 "low risk" in the rectum and the lower sigma. The technically difficult procedure requires much experience. It should therefore only be practiced in centers to reach an acceptable number of clinical cases. In the lower third of the rectum, especially in locations close to the dentate line, the conventional transanal resection of tumours is also an adequate procedure.