A Ruptured Aneurysm of the Right Gastric Artery Occurred Immediately after Endovascular Treatment of Common Hepatic Aneurysm: A Case Report

Abstract

An 84-year-old female underwent coil embolization for a 22 mm aneurysm of the common hepatic artery (CHA) and felt severe abdominal pain at a day after the treatment. Contrast-enhanced CT revealed intra-abdominal hemorrhage due to a ruptured aneurysm of the right gastric artery (RGA). A microcatheter was successfully advanced near it via the left gastric artery. We successfully embolized it using 0.4 mL of 25% n-butyl-2-cyanoacrylate mixed with Lipiodol. This case report suggests that hemodynamic shear stress change to the fragile vascular wall stimulated by increased RGA flow after occlusion of the CHA causes aneurysmal formation and rupture of the RGA.