A 47-year-old man complained about chronic epigastric pain. He underwent upper gastrointestinal endoscopy, revealing a 20-mm smooth, cushion sign-negative SMT in the greater curvature of the stomach. Endoscopic ultrasonography (EUS) revealed a low echogenic mass from the 4th layer, which was heterogeneous in the inside. EUS and abdominal computed tomography after 1.5 year showed a tendency to increase to 25 mm. Neuroendocrine tumor (NET) G1 was diagnosed by EUS-FNA, laparoscopic gastrectomy was performed, and glomus tumor was diagnosed by pathological analysis. Primary gastric glomus tumors are rare and need further study with a literature review.
