An Incidental RectalWall Bulging Lesion in a Patient with a History of Resected Ovarian Tumor

Abstract

ubepithelial tumors are classified according to the layer they are originated. Gastrointestinal stromal tumor (GIST), leiomyoma, glomus tumor, lymphoma and aberrant pancreas may originate from the fourth hypoechoic muscularis propria layer. On the other hand, subepithelial metastatic deposits may be located anywhere between the submucosa and subserosa. 1 Rarely, as in this case, the primary tumor metastasizes to the gastrointestinal tract wall before it is resected. Then awakens decades after the treatment of the primary tumor with a long tumor free survival which is known as tumor dormancy. 2 Herein, we present a dormant tumor case, discovered years later, due to a resected primary epithelial ovarian carcinoma. CASE REPORT A 62 year old woman under oncologic surveillance due to a 16 year ago resected serous papillary ovarian carcinoma was found to have a rectal wall subepithelial lesion (SEL), in cross-sectional imaging which was periodically performed during the surveillance by oncology. Later on, this lesion was considered as a GIST in rectoscopic examination. In linear EUS examination, rectal wall subepithelial mass was 41.5 x 34 mm in size, hypoechoic,