BILATERAL COMMON ILIAC ARTERY ANEURYSMS SECONDARY TO FIBROMUSCULAR DYSPLASIA ACCOMPANIED WITH A CORONARY ANEURYSM - A CASE-REPORT

Fibromuscular dysplasia (FMD) is found in various arteries but the com mon iliac arteries and the coronary arteries are seldom involved. A 49 -year-old woman was referred to our hospital with a pulsatile mass in her right lower quadrant, She had subdural hemorrhage in a postpartum state at the age of 27. After admission angiography diagnosed the bila teral iliac artery aneurysms and coronary angiography revealed a coron ary artery aneurysm, the size of which was 12 mm x 19 mm in the region of the left main trunk. The bilateral iliac artery aneurysms were res ected and Y-shaped vascular prosthesis was replaced. Microscopic secti ons of the aneurysm showed remarkable decrease of elastic fibers and t hinning of the media, but no increase occurred in the smooth muscle. H istopathological diagnosis was FMD (periarterial fibroplasia). To our knowledge, no patient with a iliac arterial aneurysm caused by FMD has been reported and only a few cases with coronary arterial FMD have be en described. This is the first report of iliac arterial aneurysm due to FMD. Since this case has multiple aneurysms, a long-term follow-up is definitely required, especially focusing on the coronary aneurysm.