<prompt> Onion skin thickening of aeriolar wall is seen inAtherosclerosisMedian calcific sclerosisHyaline aeriosclerosisHyperplastic aeriosclerosis  <response>: Hyperplastic aeriolosclerosis is more typical of severe hypeension. Vessel exhibit onion skin , concentric laminated thickening of aeriolar walls and luminal narrowing Robbins 9 th edition page no. 334 