hydronephrosis
noun
hy·dro·ne·phro·sis
-ni-ˈfrō-səs 
plural hydronephroses
-ˌsēz
: cystic distension of the kidney caused by the accumulation of urine in the renal pelvis as a result of obstruction to outflow and accompanied by atrophy of the kidney structure and cyst formation
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“Hydronephrosis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hydronephrosis. Accessed 5 Jul. 2025.
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