Fibromuscular dysplasia arteries beyond renal

• A. Renal Arteries
• B. Distal ICA, EIA, Hepatic And Splenic Arteries
• C. Brachial Arteries
• D. Mesenteric Arteries

Answer: (B)

Fibromuscular dysplasia can affect arteries outside the kidneys, not just renal arteries. Beyond the renal vessels, it commonly involves parts of the carotid system and other visceral/peripheral arteries. The distal internal carotid artery is a well-known site, and involvement of the external iliac, hepatic, and splenic arteries is also described. This makes a choice listing distal ICA along with external iliac and visceral arteries the best representation of FMD beyond the renal territory. Other options point to arteries within or near the kidney or to arteries less characteristic for the beyond-renal distribution, so they don’t illustrate the typical nonrenal sites as clearly.