Abstract
The optimal treatment for a gastrointestinal stromal tumor (GIST) of the rectum is controversial owing to its extremely low incidence [1]. The submucosal tunneling endoscopic resection (STER) technique is a so-called “nonexposed” full-thickness endoscopic resection technique developed to remove upper gastrointestinal submucosal tumors (SMTs) arising from the muscularis propria [2] [3]. This technique allows a very interesting exposure of a GIST, as the axis of the knife is more tangential than when using an “exposed ESD technique”, which features a perpendicular axis that carries a risk of R1 resection. We believe that it could also be interesting for the resection of rectal SMTs. We report here the first successful use of this technique, with an accompanying video ([Video 1]), for the removal of a 15-mm rectal GIST.
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