Pulsatile buttock masses: gluteal and persistent sciatic artery aneurysms.

A case of persistent sciatic artery aneurysm in a 65-year-old woman was treated by exclusion and reconstruction with a saphenous vein graft. When cases such as this present as pulsatile buttock masses, arteriography is the most important diagnostic aide. It will indicate when the circulation must be reconstructed and when it is safe to simply ligate an aneurysm.