There are two other forms of arteriosclerosis (hardening of the arteries) in addition to atherosclerosis: arteriolosclerosis and medial calcific sclerosis.
This is a different kind of arteriosclerosis.This is hyperplastic arteriolosclerosis, which most often appears in the kidney in patients with malignant hypertension.
In arterioles, a process called hyaline arteriolosclerosis is where the walls of arterioles where they develop hyaline deposits, which are the deposits of proteins, and these make them hard and inflexible.