<prompt> In a specimen of kidney, fibrinoid necrosis is seen and onion peel appearance is also present. Most probable pathology is:Hyaline degenerationHyperplastic aeriosclerosisGlomerulosclerosisFibrillary glomerulonephritis  <response>: Histological alterations characterizing blood vessels in malignant hypeension. ? Hyperplastic aeriosclerosis Fibrinoid necrosis of aerioles: Onion-skinning concentrically arranged smooth muscle with collagen. 