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September 27, 2026

Hydronephrosis: Swelling of the Kidney

What hydronephrosis is and its common causes.

Medically Reviewed By

Artemis Kidney Hospital Nephrology & Transplant Team

See our full team on the Doctors page

Hydronephrosis is swelling of a kidney caused by urine backing up when its drainage is blocked. Common causes include kidney stones, strictures, pregnancy, and an enlarged prostate. Prolonged blockage can damage the kidney, so the cause is usually treated to relieve the backup.

Medical Disclaimer

This article is for general education only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified nephrologist about your own condition.

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