Fig

In malignant nephrosclerosis, the kidney demonstrates focal small hemorrhages. This is due to an accelerated phase of hypertension in which blood pressures are very high (such as 300/150 mm Hg).
Malignant neophrosclerosis

Onion-skin concentric, laminated thickening of the arteriolar wall with progressive narrowing of the lumen.
Hyperplastic arterilosclerosis

One complication of hyperplastic arteriolosclerosis with malignant hypertension is fibrinoid necrosis, as seen here in a renal arteriole. Rupture of the affected arterioles lead to grossly visible minute hemorrhages.
Hyperplastic arterilosclerosis with fibrinoid necrosis