Endoscopic full‐thickness resection of a colonic schwannoma

Abstract

We report the case of a 61-year-old female with a submucosal tumor (SMT) located in the proximal transverse colon, incidentally diagnosed on screening colonoscopy. Contrast-enhanced abdominopelvic computed tomography showed a well-circumscribed hyperenhancing mass with 20 mm, compatible with a gastrointestinal stromal tumor. On repeat colonoscopy (Olympus® ), after submucosal injection of indigo carmine and saline, a semi-circumferential incision was performed using the HookKnife™ (Olympus® ). This article is protected by copyright. All rights reserved.