Fibromuscular dysplasia presenting with asymptomatic bilateral renal infarctions.

Fibromuscular dysplasia (FMD) is a noninflammatory nonatherosclerotic vascular disease. It is the second cause of renovascular hypertension after atherosclerosis. Although FMD usually has a good prognosis, renal infarctions and artery dissections have been described. We present the case of a 38-year-old woman with hypertension and asymptomatic bilateral renal infarctions. Bilateral FMD of segmental branches of the renal arteries was diagnosed by digital subtraction angiography after an exhaustive study. Previous intake of nonsteroidal anti-inflammatory drugs may also have played a significant role in the development of renal infarctions. To our knowledge, bilateral renal infarctions complicating FMD have been reported in only four previous cases; only in one of those cases, renal infarctions were asymptomatic.