Chronic Pyelonephritis

Chronic Pyelonephritis •There are marked abnormalities involving the kidney, somewhat sparing the lower pole. •The cystic appearing structures are actually dilated calyces, reflecting hydronephrosis. •The renal parenchyma between the dilated calyces show reduction in tissue when compared to the more normal renal parenchyma of the lower pole. (Description By:H. Yamase, M.D. ) (Image Contrib. by: Hartford Hospital )