Ruptured popliteal artery aneurysm: An initial presentation of Behçet’s disease

Behçet’s Disease (BD) is an uncommon systemic vasculitic disorder, that can affect multiple organ systems. Arterial and venous aneurysmal and occlusive manifestations can occur. We report a case of a 25-year-old male presenting with a 4-week history of left leg pain and swelling, with acute deterioration due to ruptured popliteal aneurysm, confirmed on imaging. He underwent emergency popliteal bypass with ipsilateral reversed great saphenous vein. Subsequent workup revealed pulmonary aneurysms and features suggestive of BD. He received aggressive immunosuppressive therapy to good effect. The management of the patient’s popliteal aneurysm, diagnostic procedure and subsequent management are discussed.