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The renal pelvis is where urine collects in the kidney before it is passed down the ureter to the bladder. Renal pelvis dilation (RPD) is a slight increase in the amount of urine in the renal pelvis of one or both kidneys, and is found in a small percentage of fetuses during ultrasounds. It occurs in 2-3% of pregnancies.

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Christop Hodkiewicz

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Q: What is renal dilatation?
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Can female fetus have renal pelvis dilatation?

Yes, both genders can have dilatation of the renal pelvis.


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