A 51-year-old man with an IGH associated with pancreatitis. A–C. Axial CT scans showing a mixture of fluid-dense and hyperdense lesions (50–70 Hounsfield units) (A) without enhancement (white arrows) and (B) along the greater curvature of the stomach (black arrows). (C) Coronal CT scan showing a huge hematoma (white arrowheads) along the gastric wall and distension of the gastric wall. There is a small amount of fluid collection with mild peritoneal thickening in the omentum and perisplenic space, suggesting remnant or recurrent walled-off necrosis of pancreatitis. D. A small tubular structure (arrow) between the pancreatic tail and IGH, suggesting the possible presence of a pancreaticogastric fistula. E. Endoscopic ultrasonography shows a large cystic lesion with heterogeneous echogenicity and internal septation in the greater curvature of the gastric wall. There was no vascularity within the mass. About 200 mL of fluid was aspirated. As the fluid appeared dark reddish in color,^the mass was confirmed as a hematoma. F. Follow-up abdominal CT scan obtained after about 2 months showing a marked decrease in the size of IGH, and walled-off necrosis around the pancreas tail and retroperitoneum.