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Title: Pyonephrosis  
Author: World Heritage Encyclopedia
Language: English
Subject: Kidney stone, Nephrostomy, Urinary retention, ICD-10 Chapter XIV: Diseases of the genitourinary system, Microhematuria
Publisher: World Heritage Encyclopedia


Classification and external resources
ICD-10 N13.6
ICD-9-CM 590.0, 590.1, 590.8
eMedicine med/2851
MeSH C12.777.419.570.643.790

Pyonephrosis (Greek pyon "pus" + nephros "kidney") is an infection of the kidneys' collecting system. Pus collects in the renal pelvis and causes distension of the kidney.

It can cause kidney failure.[1]


  • Causes 1
  • Treatment 2
  • See also 3
  • References 4


Pyonephrosis is sometimes a complication of kidney stones, which can be a source of persisting infection. It may also occur spontaneously. It can occur as a complication of hydronephrosis or pyelonephritis.


This requires drainage, best performed by ureteral stent placement or nephrostomy.

See also


  1. ^ "pyonephrosis" at Dorland's Medical Dictionary
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