of 84 kidneys submitted for a pathoanatomic study ( surgical evaluation and/or histopathology ) pyonephrosis was found in 20 per cent , xanthogranulomatous pyelonephritis in 8 per cent , end stage pyelonephritic kidney in 6 per cent , end state hydronephrotic kidney in 7 per cent , severe pyelonephritic changes in 7 per cent and a perinephric abscess in 5 per cent .
C0034188
xanthogranulomatous pyelonephritis
C0034186
pyelonephritic