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Classification & external resources
ICD-10 N13.6
ICD-9 590.0, 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 renal collecting system. Pus collects in the renal pelvis and causes distension of the kidney. This requires drainage, best performed by nephrostomy.

Pyonephrosis is sometimes a complication of renal stones, which can be a source of persisting infection. It may also occur spontaneously.

See also

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pyonephrosis". A list of authors is available in Wikipedia.
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