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[hahy-droh-nuh-froh-sis] /ˌhaɪ droʊ nəˈfroʊ sɪs/

noun, Pathology.
dilation of the branches and pelvic cavity of the kidney, caused by an accumulation of urine resulting from obstruction of normal outflow.

hydronephrosis hy·dro·ne·phro·sis (hī’drō-nə-frō’sĭs)
The dilation of the pelvis and calices of one or both kidneys because of the accumulation of urine resulting from obstruction to urine outflow. Also called uronephrosis.
hy’dro·ne·phrot’ic (-frŏt’ĭk) adj.


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