May Cause

Small kidney

May Be Caused by

 Common

Arteriolar nephrosclerosis

Atherosclerosis

Avulsion of renal artery

Chronic pyelonephritis

Fractured kidney

Renal artery spasm

Renal artery stenosis

Renal artery thromboembolism

Trauma

 Uncommon

Arteriovenous fistulas

Arteriovenous malformation

Extrinsic pressure on renal artery

Fibromuscular hyperplasia

Fibrous band

Lymphadenopathy

Perinephric hematoma

Polyarteritis nodosa

Renal arteritis

Renal artery aneurysm

Renal compression

Renal vein thrombosis

Splenomegaly

Subcapsular hematoma

Takayasu arteritis