Acute Occlusion of Whole Length of Inferior Vena Cava Presenting as Pain in Sacroiliac Region

Thrombosis of the Inferior Vena Cava (IVC) is an under recognized entity with a variety of clinical presentations. Thrombosis of the IVC in the absence of congenital abnormalities is rare; when it does occur, it is usually the result of a predisposing hypercoagulable state. We describe a rare presentation of acute thrombotic occlusion of IVC, which was diagnosed accidentally.