EUS diagnosis of a left gastric artery pseudoaneurysm and aneurysmogastric fistula seen with a massive GI hemorrhage (with video)

Abstract

A visceral artery pseudoaneurysm is an uncommon but potentially hazardous cause of massive GI hemorrhage. Common causes of a pseudoaneurysm include acute and chronic pancreatitis, abdominal surgery, connective tissue disorders, and trauma.1 Contrast-enhanced CT (CECT) is usually the initial imaging modality to diagnose a visceral artery pseudoaneurysm.2 However, conventional angiography remains the criterion standard for the diagnosis.3 The major complication of a pseudoaneurysm is rupture, which causes massive GI hemorrhage and, consequently, a high mortality.