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chronic pyelonephritis

Chronic pyelonephritis is a chronic inflammation caused by bacterial infection of kidney, which mainly invades renal interstitium, renal pelvis and calyceal tissue. Due to the continuous or repeated occurrence of inflammation, renal interstitium, renal pelvis and renal calyx are damaged, scar is formed, and even kidney atrophy and dysfunction occur. Usually patients may only have backache and (or) low fever,...

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