A140 ECTOPIC SPLEEN PRESENTING AS A GASTRIC SUBMUCOSAL LESION

BACKGROUND: Accessory spleen is ectopic splenic tissue which can be either congenital or acquired. It is usually an asymptomatic incidental finding. In the context of known malignancy, accessory spleen can be mistaken for metastasis. PURPOSE: Here, we share a case of ectopic spleen presenting as a gastric subepithelial lesion post splenectomy. Rare cases have been reported in the literature. METHOD: Case Report and Literature Review RESULT(S): Case: A middle age male with history of splenic rupture secondary to a motor vehicle accident and metastatic renal cancer was found to have a gastric subepithelial lesion on endoscopy. Endoscopic ultrasound (EUS) revealed a subepithelial mass coming off the submucosa or muscularis mucosa of the gastric wall with intact muscularis propria. EUS-guided core biopsy was performed and demonstrated splenic tissue CONCLUSION(S): Splenic tissue should be considered in the differential diagnosis when assessing gastric subepithelial tumors even in the context of previous trauma to the spleen. In addition, EUS-guided core biopsy may be required to rule out metastatic disease. PLEASE ACKNOWLEDGE ALL FUNDING AGENCIES BY CHECKING THE APPLICABLE BOXES BELOW: None DISCLOSURE OF INTEREST: None Declared ESOPHAGEAL, GASTRIC & DUODENAL DISORDERS