Endoscopic ultrasound (EUS) for the evaluation of gastric lesions is a common indication for referral to my endoscopy unit. EUS, with or without fine needle aspiration (FNA), plays an important and sometimes pivotal role in the evaluation of gastric pathology. EUS can help differentiate neoplastic from non-neoplastic endoscopic findings and may be useful in the pretreatment staging of gastric malignancies, specifically gastric adenocarcinoma. Radial echoendoscopes provide a 360-degree view, resolve the gastric wall in a 5-echolayer pattern (
Figure 10-1A), and visualize structures within and…