There are two other forms of arteriosclerosis (hardening of the arteries) in addition to atherosclerosis: arteriolosclerosis and medial calcific sclerosis. Arteriolosclerosis is typically seen in the kidneys. One form, called hyaline arteriolosclerosis, is demonstrated by the markedly thickened arteriole to the lower right of this glomerulus with PAS stain. Hyaline arteriolosclerosis is seen in the elderly, but more advanced lesions are seen in persons with diabetes mellitus and/or with hypertension.