How are the causes of hydronephrosis and hydroureter classified?

Updated: Dec 16, 2020
  • Author: Dennis G Lusaya, MD; Chief Editor: Bradley Fields Schwartz, DO, FACS  more...
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A multitude of causes exist for hydronephrosis and hydroureter. Classification can be made according to the level within the urinary tract and whether the etiology is intrinsic, extrinsic, or functional.

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