A 66-year-old female patient presented with hematemesis. Esophagogastroduodenoscopy (EGD) revealed a 30 mm solitary polyp in the middle part of the stomach. The bleeding source was not identified. Contrast-enhanced CT showed a 30 mm mass in the stomach. The area surrounding the mass was well enhanced in the arterial phase, suggesting possible bleeding from this area.
The next day, the patient again had hematemesis, and EGD was performed, but the findings remained unchanged. Since the polyp was suspected as the source of bleeding, endoscopic mucosal resection was performed for both diagnosis and treatment. Pathological examination confirmed the diagnosis of hamartoma.
Since then, the patient has had no recurrence of hematemesis. Gastric hamartoma with hematemesis is rare. Here, we report a case of gastric hamartoma diagnosed based on hematemesis as the initial symptom.
