A CASE OF GASTROINTESTINAL STROMAL TUMOR (GIST) OF THE STOMACH ASSOCIATED WITH INTRACYSTIC INFECTION IN WHICH THE INFECTION WAS CONTROLLED BY PERFORMING EUS-GUIDED DRAINAGE

Abstract

A 76-year-old man was admitted with upper abdominal pain. Abdominal CT showed a cystic lesion 15 cm in diameter between the stomach and the pancreas and a pancreatic stone within the main pancreatic duct. Esophagogastroduodenoscopy (EGD) showed extra compression to the posterior wall of the gastric body. Six days after admission, he developed a high fever. We suspected a pancreatic pseudocyst caused by chronic pancreatitis and performed endoscopic ultrasound-guided drainage (EUS-D). After EUS-D, the intracystic infection was improved and he was discharged 2 months after admission. CT 9 months after discharge showed a thickening of the cystic wall, and a malignant tumor was suspected. Gastrointestinal tumor (GIST) of the stomach was confirmed by EUS-guided fine-needle aspiration, which was followed by laparotomy. We report this case because GISTs of this type and course are rare. We believe that this may be a valuable case for discussions of treatment of GISTs of the stomach that are associated with infections.