Visceral is a collective term for an organ in your body, such as the liver or spleen, so a visceral aneurysm is an aneurysm that occurs in an organ. Abdominal visceral artery pseudoaneurysms are potentially lethal vascular lesions that arise from splanchnic circulation and the renal artery, as a result of various causes including inflammation, infection, trauma, and neoplasm. Unlike true aneurysms that have all three arterial wall layers, pseudoaneurysms develop due to disruption of intimal and medial layers of the arterial wall and do not contain any epithelized wall. They are outlined by thin fibrous tissue and usually surrounded by peri-arterial hematoma. The incidence of rupture and bleeding of pseudoaneurysms varies from 2% to 80% depending on the location, with untreated mortality rates reaching up to 100%. Due to the high risk of rupture and bleeding, treatment of these pseudoaneurysms is necessary.

Pseudoaneurysm embolization is a minimally invasive procedure that involves transcatheter occlusion of the aneurysm/ artery and/or its branch vessels using metallic coils, PVA particles, Glue, or other embolic devices.