Abstract
Popliteal artery aneurysms are common among the peripheral artery aneurysms but ruptured popliteal artery aneurysm has been rarely reported. We report a surgically treated case of a ruptured popliteal artery pseudoaneurysm initially misinterpreted. A 70 year-old man visited the outpatient with complaints of right crural swelling. He was diagnosed femoral hematoma with CT scan. After several days, he revisited our emergency room because of worsening right crural swelling and difficulty in walking. He was admitted with a diagnosis of crural phlegmon. On the next day of admission, he was diagnosed ruptured right popliteal artery aneurysm and large crural hematoma with a contrast-enhanced CT scan. An emergency operation was performed through the posterior approach with thigh tourniquet. After the resection of the popliteal and crural hematoma, his right popliteal artery was reconstructed with ePTFE graft replacement. We could not identify the wall of ruptured popliteal artery aneurysm. The post operative course was uneventful. The patient was doing well at his 1-year follow-up evaluation. We considered that the final diagnosis was popliteal artery pseudoaneurysm caused by idiopathic popliteal artery rupture.
