Abstract
A 40-year-old man underwent an endoscopic examination due to epigastric pain. Endoscopy revealed a soft submucosal tumor of about 4 cm in the antral greater curvature. A relatively low luminescent homogeneous tumor mass that was partially filled with a solid component of high luminance mainly located in the submucosal layer was evident on endoscopic ultrasonography. Distal gastrectomy was performed because of possible malignancy. The resected specimen had a cystic structure with a heterotopic pancreas and its wall was incompletely lined with gastric and duodenal mucosa. Noncaseating granuloma was found in the gastric mucosa and perigastric lymph nodes. The final pathological diagnosis was a duplication cyst with heterotopic pancreas of stomach/sarcoidosis of the stomach.
Gastric duplication cysts are most frequently found in childhood. Thus we experienced a rare case of adult gastric duplication cyst and herein report this case with a literature review.
