True aneurysms of foot arteries: A case report of a young patient.

BACKGROUND Reports of true aneurysms of the lower leg are rare. Among them, cases involving young patients are all the more rare, and there are many unexplored aspects to this pathological condition. CASE PRESENTATION This is a case of a 30-year-old woman who was referred by an orthopedic surgeon with a chief complaint of severe pain during walking and landing. Angiography revealed multiple aneurysms and arteriovenous fistulas in the posterior tibial artery and lateral plantar artery. We anastomosed the lateral plantar artery and interposed the posterior tibial artery using the great saphenous vein. CONCLUSIONS Although aneurysms in the arteries of the feet are rare, multiple true arterial aneurysms were observed in the lower leg of a juvenile patient in the present case. Dilation of arteries other than the aneurysm was also observed, suggesting that arteriovenous fistula and arterial occlusion may have been the causes of the true aneurysm of the lower leg. This is a valuable finding, suggesting a cause of aneurysm other than age-related atherosclerotic changes.