Why would my 20 week baby have dilated kidneys on an ultrasound?

In some cases, one or both kidneys may fail to develop. In other instances, an abnormality may be present that blocks the outflow of urine. This blockage may cause urine to back up into the kidney, a condition called hydronephrosis, which causes the kidney to appear enlarged on the ultrasound test.

What causes kidney problems in fetus?

A baby may also develop kidney dysplasia if his or her mother takes certain prescription medications during pregnancy, such as some used to treat seizures and high blood pressure. A mother’s use of illegal drugs, such as cocaine, during pregnancy may also cause kidney dysplasia in her unborn child.

Can kidney damage be seen on ultrasound?

Ultrasound findings can be normal in patients with renal disease, especially in prerenal azotemia and acute parenchymal renal disease. Echogenic kidneys indicate the presence of parenchymal renal disease; the kidneys may be of a normal size or enlarged. Small kidneys suggest advanced stage chronic kidney disease.

What causes kidney problems in utero?

Fetal hydronephrosis is swelling of a baby’s kidney caused by a buildup of urine. This can happen while the baby is still in the mother’s uterus. Doctors often find the problem when a woman has a fetal ultrasound during pregnancy. Urine normally travels from the kidney down a narrow tube to the bladder.

Is hydronephrosis a birth defect?

Birth defects in the urinary tract may cause hydronephrosis. Even when birth defects are the cause, hydronephrosis may be mild and may improve as the child gets older. However, birth defects may also cause hydronephrosis that is severe or gets worse over time.

Can an unborn baby survive with one kidney?

Many children with only one kidney have no symptoms or complications and do not need treatment. Sometimes the other kidney grows larger than normal to make up for the missing kidney. However, children may be at risk of urinary tract infections (UTIs) and/or hypertension (high blood pressure) later in life.

How do you know if a baby has kidney problems?

Early kidney disease shows few if any signs. Some children show mild puffiness around the eyes and face, or have foamy urine. As the disease progresses, there may be swelling of the eyes and feet, nausea and vomiting, fatigue and loss of appetite, and blood or protein in the urine.

Why are kidneys not visible on ultrasound?

Renal agenesis (or kidney agenesis) means one or both kidneys do not develop while a baby is growing in the womb. Renal agenesis may be picked up before birth on the 20 week antenatal ultrasound scan, or soon after birth. It may also be picked up in an older child who has some symptoms.