Gastric Arteriovenous Malformation: A Case Report and Review of Literature
نویسندگان
1 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
2 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
3 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
4 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
5 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
6 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
7 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
8 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
9 Department of Gastroenterology and Endoscopy Center, Peking University International Hospital, Beijing, 102206, China
doi
10.22034/ircmj.2025.493810.1705چکیده
Gastric arteriovenous malformations (Gastric AVMs) are a rare etiology of upper gastrointestinal (GI) bleeding, and often present with ambiguous endoscopic findings. We hereby present the case of a 63-year-old man with recurrent upper GI bleeding, that was initially misdiagnosed as a submucosal tumor (SMT) following the initial gastroscopy, but was later diagnosed as a gastric AVM. Following the gastroscopy, the patient was treated with endoscopic hemostasis using metal clips. A re-bleeding episode prompted a second endoscopy 3 months following the procedure. This endoscopy revealed a donut-like ulcerated SMT lesion. Endoscopic ultrasonography (EUS) demonstrated a thickened mucosal layer with internal hypoechoic and anechoic regions, which indicated a vascular lesion. The presence of abundant blood flow within the lesion was confirmed on Doppler ultrasound. Digital subtraction angiography (DSA) corroborated these findings, demonstrating a characteristic donut-like image at the lesion site. The patient subsequently underwent laparoscopic-assisted partial gastrectomy, and had no postoperative bleeding episodes. Histopathological examination confirmed the diagnosis of gastric AVM.
