May Be Caused by

 Common

Acute obstruction

Acute renal failure

Medullary sponge kidney

Pyelonephritis

Renal tubular ectasia

Trauma

 Uncommon

Arterial emboli

Arteritis

Autosomal recessive polycystic kidney disease

Drug abuse

Polyarteritis nodosa

Renal vein thrombosis

Wegener granulomatosis