Gastric Ectopic Pancreas With Pseudocyst Formation Causing Gastric Outlet Obstruction

Abstract

Ectopic pancreas is a rare entity referring to the presence of pancreatic tissue at an anatomic location distinct from the pancreas. Ectopic pancreatic lesions in the stomach present a diagnostic challenge because the lack of distinguishing imaging and endoscopic features make them difficult to differentiate from other types of submucosal lesions. We report a case of ectopic pancreas presenting as a gastric antral mass with a unique combination of rare complications: chronic pancreatitis and pseudocyst formation causing gastric outlet obstruction. This case highlights complications that can occur from ectopic pancreatic lesions and the challenges of diagnosing ectopic pancreas.

Gastric Outlet Obstruction Caused by Gastric Ectopic Pancreas With Pseudocyst Formation

“…This condition undergoes various pathological changes that can also be observed in a normal pancreas, including bleeding, 1 acute and chronic pancreatitis, 2,3 cysts, and malignant transformation. 4,5 There have been reports of gastric ectopic pancreas causing gastric outlet obstruction (GOO), [6][7][8][9] most of which were diagnosed and treated through surgery. Two cases of GOO caused by gastric ectopic pancreas were treated with endoscopic ultrasonography (EUS)-guided cystic drainage in China and Japan, 6,8 one of which was observed without surgical resection and showed no signs of recurrence.…”