Abstract
Infected popliteal artery aneurysm is rare and Bacteroides infection in this site has not been previously reported. The patient was a 72-year-old Caucasian man and his chief complaint was swelling and pain of his right knee. He had undergone hemodialysis for one year and had intermittent claudication previously. Contrast-enhanced computed tomography demonstrated a 57 mm-diameter occluded, calcified popliteal artery pseudoaneurysm containing gas. An infected popliteal artery aneurysm was strongly suspected and emergency surgery was performed. Using a posterior approach, debridement and drainage of the infected aneurysm was performed and the popliteal artery was suture-closed proximal and distal to the aneurysm. Culture of the pus revealed Bacteroides infection. Pathological examination revealed secondary infection to the atherosclerotic pseudoaneurysm. He underwent right superficial femoral-tibioperoneal trunk arterial bypass using an accessory saphenous vein 5 months after the first operation. His postoperative course was uneventful.
