Endoscopic submucosal dissection for gastric duplication cyst with heterotopic pancreas

Abstract

A 63-year-old man presented with a gastric subepithelial tumor, incidentally detected on screening endoscopy. A subepithelial tumor, approximately 30 mm in size and with a positive cushion sign, was observed on the greater curvature of the gastric lower body ([Fig. 1]). Severe erythema and hemorrhagic spots were seen on its surface. On endoscopic ultrasonography, the lesion was anechoic, mainly confined to the submucosal layer, and had a small branch-shaped hypoechoic portion in the cystic wall ([Fig. 2]). Endoscopic submucosal dissection (ESD) was suggested in order to prevent bleeding ([Video 1]).

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