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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does This Renal Ultrasound Of An Infant Indicate?

My 5 month old daughter recently had a renal ultrasound and subsequently diagnosed with bilateral mild pelviectasis. Measurement was 6.1cm. We have been instructed to repeat the US in two months. Can this cause pain or discomfort? Is it wise to wait 2 months to repeat or should I make an appointment with a kidney specialist now?
Tue, 16 Jan 2018
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Oncologist,  's  Response
HI


Enlargement of the part of the kidney that collects urine (the renal pelvis) from 4 to 10 millimeters in diameter is called fetal pyelectasis or “renal pelvic dilatation”. Dilation of the renal pelvis to greater than 10 mm is called severe pyelectasis or hydronephrosis.
Pylectasis involving only one kidney does not need intervention, but requires follow-up ultrasound evaluation after 28 weeks for possible worsening of the condition. Severe hydronephrosis involving both kidneys is associated with increased risk of poor outcome, and is monitored for the development of low amniotic fluid.
An ultrasound is usually done 5 to 7 days after birth to reevaluate the infant’s kidneys. Most cases of mild pyelectasis where the renal pelvis measures less than 8 mm and involves only one kidney tend to resolve spontaneously either in utero or within a few months after delivery. Pyelectasis greater than 8 mm is more likely to need surgical correction during childhood.

REGARDS
Dr DE


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What Does This Renal Ultrasound Of An Infant Indicate?

HI Enlargement of the part of the kidney that collects urine (the renal pelvis) from 4 to 10 millimeters in diameter is called fetal pyelectasis or “renal pelvic dilatation”. Dilation of the renal pelvis to greater than 10 mm is called severe pyelectasis or hydronephrosis. Pylectasis involving only one kidney does not need intervention, but requires follow-up ultrasound evaluation after 28 weeks for possible worsening of the condition. Severe hydronephrosis involving both kidneys is associated with increased risk of poor outcome, and is monitored for the development of low amniotic fluid. An ultrasound is usually done 5 to 7 days after birth to reevaluate the infant’s kidneys. Most cases of mild pyelectasis where the renal pelvis measures less than 8 mm and involves only one kidney tend to resolve spontaneously either in utero or within a few months after delivery. Pyelectasis greater than 8 mm is more likely to need surgical correction during childhood. REGARDS Dr DE