Two Cases of GIST of the Lower Rectum Performed Local Resection with TAMIS

Abstract

Gastrointestinal stromal tumor (GIST) of the rectum is a rare entity, accounting for about 5% of all GISTs of the entire gastrointestinal tract. The first therapy for choice for resectable localized intestinal GISTs is local resection of the intestine, where the preservation of the anal function becomes an issue as for rectal GISTs. Operative procedures for rectal GISTs have been open or laparoscopic extended surgeries or transanal resection under direct vision in many cases. However, the former procedures are frequently complicated by anal dysfunction or urinary problem and the later one has such a fault as it cannot be used except for lesions situating close to the anal rim due to difficulty in securing the field of view, Since 2010 when Atallah and others reported the transanal minimally invasive surgery (TAMIS) that was established by applying the single hole laparoscopic surgery that can be introduced in multiple institutions, the indication of local resection has expanded.

We report two cases of lower rectal GIST in which TAMIS was probed to be an excellent surgical procedure in terms of the radicality and conservation of the organ function.