Hemoperitoneum due to a ruptured right gastroepiploic artery following non-interventional endoscopic ultrasonography: a case report.

Endoscopic ultrasonography has become a routine procedure in clinical practice and is widely accepted as a safe procedure. Previous studies have reported that severe bleeding rarely occurs even when performing fine-needle aspiration biopsy. Severe hemorrhage following non-interventional endoscopic ultrasonography has never been reported. We herein report a case of hemorrhagic shock due to hemoperitoneum caused by a ruptured right gastroepiploic artery consequent to a diagnostic endoscopic ultrasonography. The patient was administered two antithrombotic agents. An extensive diagnostic workup contributed to the correct diagnosis, which led to a successful treatment by transcatheter arterial embolization. Endoscopists should be aware of this rare, but potentially fatal, adverse event of endoscopic ultrasonography.