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Hydronephrosis Causes & Risks

Causes

Kidney, Ureter, Bladder, and Kidney Stone

© 2009 Nucleus Medical Art, Inc.

Hydronephrosis is caused by two problems in the urinary system. A blockage may prevent urine from draining out of the kidneys. Or a condition called reflux may cause urine to flow back into the kidneys from the bladder.

Conditions that may cause hydronephrosis include:

  • A blockage or defect in the urinary system that is present at birth
  • Kidney stones
  • A blood clot
  • Scarring of the ureters (tubes that connect the kidneys to the bladder)
  • A tumor in the pelvic area (such as bladder, cervix, colon, or prostate)
  • Enlarged prostate
  • Enlarged uterus during pregnancy
  • Persistent urinary infection in the kidneys
  • Neurogenic bladder
  • Injury to structures in the urinary system (eg, from surgery or trauma)

Risk Factors

The following factors increase your chances of developing hydronephrosis:

  • Defect in the urinary system that is present at birth
  • Cancers in the pelvic area
  • Pelvic surgery
  • Blood-clotting disorders
  • Recurrent urinary tract infections
  • Enlarged prostate
  • Neurogenic bladder
  • Pregnancy

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition. Copyright © 2020 EBSCO Publishing All rights reserved.

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