May Be Caused by

 Common

Arteriosclerosis

Congenital renal hypoplasia

Fibromuscular hyperplasia

Ischemia

Partial nephrectomy

Polyarteritis nodosa

Postobstructive atrophy

Posttraumatic atrophy

Reflux nephropathy

Renal artery stenosis

Thromboembolism

 Uncommon

Autonephrectomy

Lobar renal infarction

Multicystic dysplastic kidney

Postinflammatory atrophy following acute bacterial nephritis

Radiation nephritis

Renal papillary necrosis

Renal segmental hypoplasia

Renal vein thrombosis

Total renal infarction

Tuberculosis