hydronephrosis
腎盂積水
hy·dro·ne·phro·sis /-nɪˈfrosəs/ 名詞
腎積水
Hy·dro·ne·phro·sis n. Med. An accumulation of urine in the pelvis of the kidney, occasioned by obstruction in the urinary passages.
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hydronephrosis
n : accumulation of urine in the kidney because of an
obstruction in the ureter