Aneurysm of the Inferior Vena Cava: Imaging Findings

Aneurysms of the Inferior Vena Cava (IVC) are very rare. An IVC aneurysmmay be discovered incidentally in asymptomatic patients on imaging studies performed for other reasons. Its clinical presentation is variable. Ultrasonography (US), Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) are the modalities of choice for diagnosis. In this report, we describe two cases with a large fusiform aneurysm of the infrahepatic IVC. Despite being rare, IVC aneurysm should be remembered in patients with right upper abdominal quadrant pain and lower extremity swelling. It can be easily diagnosed by non-invasive cross-sectional imaging methods such as US and MSCT.