On<unk>  biopsy,<unk><unk>  necrosis is characterized by necrosis of papilla, swelling and sloughing of papilla, mild inflammation and microcalcification at necrotic area.
Renal papillary necrosis other diagnostic studies
Acute tubular necrosis other diagnostic studies
Polycystic kidney disease other diagnostic studies
Renal amyloidosis other diagnostic studies
Lupus nephritis other diagnostic studies
Rapidly progressive glomerulonephritis other diagnostic studies
Papillorenal syndrome other diagnostic studies
Interstitial nephritis diagnostic study of choice