Fig. 3
From: A duodenal gastrointestinal stromal tumor mimicking a pancreatic neuroendocrine tumor: a case report
a Upper gastrointestinal endoscopy revealing bulging accompanied by erosion and redness in part of the duodenal bulb. b EUS demonstrating a 40 × 35 mm2 mass with cystic and solid components in the head of the pancreas. c EUS fine-needle aspiration (FNA) considered, but was difficult to perform, because of a pulsating blood vessel present in the region to be punctured