Abstract
We report a case of popliteal artery pseudoaneurysm in Behçet disease. Popliteal-posterior tibial artery bypass was successfully performed via a posterior approach. A 28-year-old man, who had been given a diagnosis of having Behçet disease 4 years previously, presented with a 2-month history of acute-onset left calf swelling accompanied by pain. Computed tomography demonstrated a saccular aneurysm arising from the anterior wall of the popliteal artery around the origin of the anterior tibial artery. The popliteal artery had been shifted posteriorly by the aneurysm wall, and the anterior tibial artery was found to be obstructed. Surgical treatment via a posterior approach was performed. This revealed a chronic organized pseudoaneurysm wall with inflammation, and gave a direct view of the popliteal artery and the tibioperoneal trunk, which were ligated after the pseudoaneurysm had been incised. A popliteal-posterior tibial artery bypass was then established, using an autogenous vein graft. The posterior approach for posterior tibial artery bypass is not standard. In this case, however, the posterior approach was required to obtain a direct view of the popliteal artery and the tibioperoneal trunk, and was effective for the simultaneous creation of a popliteal-posterior tibial artery bypass.
