Spontaneous Recovery of Multiple Hepatic Artery Aneurysms with Segmental Arterial Mediolysis

Abstract

A 50-year-old woman with liver dysfunction complained of back pain. Computed tomography showed multiple fusiform aneurysms in the right and left hepatic arteries. As she was hemodynamically stable, antihypertensive therapy was selected to reduce the risk of rupture. During hospitalization, spontaneous and progressive thrombosis formation of multiple hepatic artery aneurysms was observed. She was diagnosed with segmental arterial mediolysis based on her clinical course and imaging findings, and she was discharged after 48 days. One year following discharge, computed tomography showed complete recovery and patent, normal hepatic arterial branches. Segmental arterial mediolysis should be considered as a condition that can cause multiple hepatic artery aneurysms, which can be treated successfully with antihypertensive therapy and careful follow-up observation with imaging when the patient's hemodynamic state is stable.