Iliofemoral venous thrombosis from external compression by a vesical diverticulum.

Twenty six percent to 47% of venous thromboembolisms (VTE) are classified as idiopathic. Deep venous thrombosis (DVT) due to external compression of the venous system by various lesions has been reported in the literature. Identification of such lesions may obviate the need for prolonged anticoagulation and prevent recurrence. An important step in the evaluation of cases with iliofemoral thrombosis is to obtain computed tomography (CT) of the abdomen and pelvis to identify any potential pathology. We report a case of acute unilateral iliofemoral DVT caused by external compression from a vesical diverticulum. The CT scan played a crucial role in the diagnosis and guided management.