It is worth clarifying that all the comments are wayyyy off, since Hyperplastic Arteriolosclerosis has nothing to do with Fibromuscular Dysplasia. Note that arteri-ol-osclerosis is exclusively referring to pathology of Arterioles. There are 2 subtypes of arteriolosclerosis, Hyperplastic Arteriolosclerosis is often due to Hypertensive Emergency (as seen in this patient). The other subtype is Hyaline Arteriolosclerosis, often associated with Diabetes Mellitus.
The correct answer choice says "Fibromuscular hyperplasia of arterioles" which is simply a description of what occurs in Hyperplastic Arteriolosclerosis (onion-skinning due to smooth muscle hyperplasia)
severe hypertension leads to hyperplastic arteriolosclerosis leading to arteriolonephrosclerosis (FA'18 --pg 297)
Fibromuscular hyperplasia will cause pre renal azotemia. S. BUN/Cr is >20 in pre renal azotemia but in the question its value is indicative of intrinsic renal failure. very confusing!!
submitted by hayayah(447), 2019-05-14T19:06:10Z
Case of arteriolosclerosis.
Hyperplastic arteriolosclerosis involves thickening of vessel wall by hyperplasia of smooth muscle ('onion-skin appearance')