Hydronephrosis is not a disease, but rather a secondary condition of an underlying ailment. It affects the drainage of urine from the urinary system, which is made up of four parts -- the kidneys, ureters, bladder, and urethra. It occurs when the body is no longer able to effectively drain the urine due to a blockage in the system. As a result, urine flows back up the urinary tract and fills the kidneys.


1. Who is Affected by Hydronephrosis?

Hydronephrosis can affect anyone, irrespective of ethnicity, age, or gender. However, according to the National Centre for Biotechnology Information, one percent of all infants experience a version of the condition, called antenatal hydronephrosis, before they are born. The study also found men are two times more likely to develop it than women.


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