Fibromuscular Dysplasia By Koon K Teo, MBBCh, PhD, McMaster University Reviewed / Revised May 2021 | Modified Sep 2022 View Patient Education Key Points Topic Resources Fibromuscular Dysplasia of... Fibromuscular dysplasia includes a heterogenous group of nonatherosclerotic, noninflammatory arterial changes, causing some degree of vascular stenosis, occlusion, or aneurysm.