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Prevea Health



Hydronephrosis is a condition in which the kidneys are abnormally dilated or overfilled with urine. It can be caused by blockage along some part of the urinary tract or by abnormal backflow of urine from the bladder. It can also be due to the abnormal development or formation of the kidney. Hydronephrosis can affect one (unilateral) or both (bilateral) kidneys.

Newborns and infants with hydronephrosis usually show few or no symptoms at all. However, it can be detected through an ultrasound while a child is still in the womb. Older children may experience pain in the side or abdomen and/or blood in the urine. Older children may also get urinary tract infections, in which symptoms include: persistent feeling of need to urinate, pain in the lower abdomen during urination, cloudy or bloody urine, pain in the side or back, fever, and nausea or vomiting.

Types of treatments may include:
  • Close observation for mild or moderate cases. This includes ultrasounds before and after birth.
  • Antibiotics after a baby is born to prevent infection, and in select cases where infection may be more likely to occur.
  • Surgery to repair any urinary tract blockage, in more severe cases.

Call to schedule an appointment with Prevea Urology:
Green Bay, Sturgeon Bay and Oconto Falls (920) 436-1359
Sheboygan, Plymouth and Manitowoc (920) 458-6664

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