GASTROINTESTINAL STROMAL TUMOR OF THE RECTUM TREATED WITH NEOADJUVANT IMATINIB FOLLOWED BY TRANSANAL ENDOSCOPIC MICROSURGERY
GASTROINTESTINAL STROMAL TUMOR OF THE RECTUM TREATED WITH NEOADJUVANT IMATINIB FOLLOWED BY TRANSANAL ENDOSCOPIC MICROSURGERY Arq Bras Cir Dig. 2015;28(1):87-9. doi: 10.1590/S0102-67202015000100022. Gastrointestinal stromal tumor of the rectum treated with neoadjuvant Imatinib followed by transanal endoscopic microsurgery. [Article in English, Portuguese] Nahas CS 1 , Nahas SC 1 , Marques CF 1 , Schmerling R 1 , Bustamante-Lopez LA 1 , Ribeiro U 1 , Cecconello I 1 . From the Department of Gastroenterology, Surgical Division, Clinic Hospital, School of Medicine, University of São Paulo, São Paulo, Brazil. Introduction: The gastrointestinal stromal tumor (GIST) is a rare type of tumor that expresses CD117 oncogene that can be detected by immunohistochemistry. The most common sites of GISTs are stomach (70%), and small intestine (20%), while rectum is comprised in only 3% of the cases. Although a rare condition, the GIST located in t...