Two cases of buttock claudication caused by isolated internal iliac artery stenosis

We present two cases of buttock claudication caused by severe stenosis of the internal iliac artery which disappeared totally after percutaneous transluminal angioplasty (PTA). Isolated stenoses of internal iliac arteries are rare. It is often difficult to distinguish between vascular buttock claudication and neurological or orthopaedic symptoms. Conventional or MR-angiography is necessary to secure the diagnosis. PTA of internal iliac artery stenosis is the adequate treatment.