Fibromuscular dysplasiaBy Mayo Clinic staff
Original Article: http://www.mayoclinic.com/health/medical/IM03535
In fibromuscular dysplasia, the muscle and fibrous tissues in your arteries thicken, causing the arteries to narrow. This reduces blood flow to your organs, leading to organ damage. Fibromuscular dysplasia of the artery to the kidney (renal artery) is shown here, with a "string of beads" appearance.