Enlargement of the kidney due to constant pressure from backed-up urine is called ________
A) hydronephrosis
B) glomerulonephritis
C) nephrolithiasis
D) polycystic kidney disease
A
Explanation: A) Correct! Hydr/o- means "water," but in this case means the water in the urine.
B) Glomerulonephritis is not characterized by backed-up urine.
C) Nephrolithiasis may or may not be accompanied by backed-up urine because of a stone, but it is not the medical name for enlargement of the kidney due to backed-up urine.
D) Polycystic kidney disease is not characterized by backed-up urine.
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