What Causes A Fetus To Have Enlarged Kidneys?

Is hydronephrosis a sign of Down syndrome?

Mild hydronephrosis is commonly found in association with Down syndrome and should prompt evaluation of fetal anatomy to identify other congenital anomalies..

What Week Do kidneys develop in fetus?

The kidneys develop between the 5th and 12th week of fetal life, and by the 13th week they are normally producing urine. When the embryonic kidney cells fail to develop, the result is called renal agenesis. It is often detected on fetal ultrasound because there will be a lack of amniotic fluid (called oligohydramnios).

Is fetal hydronephrosis hereditary?

Minimal hydronephrosis is not genetic and is not hereditary. However, hydronephrosis may coincidentally occur in future pregnancies. If UPJ obstruction is determined to be the cause of the hydronephrosis, the chances for future children with the same obstruction may be as high as 50 percent.

What is the surgery for hydronephrosis?

The most common surgical procedure is pyeloplasty. This repairs the most common type of blockage that causes hydronephrosis: ureteropelvic junction obstruction (UPJ). In pyeloplasty, the surgeon will remove the narrowed or obstructed part of the ureter.

Is a dilated kidney serious?

Left untreated, severe hydronephrosis can lead to permanent kidney damage. Rarely, it can cause kidney failure. But hydronephrosis typically affects only one kidney and the other kidney can do the work for both.

What is the best treatment for hydronephrosis?

Most people with hydronephrosis will have a procedure called catheterisation to drain the urine from their kidneys. Depending on the underlying cause, medication or surgery may be needed afterwards to correct the problem.

What is the main cause of hydronephrosis?

The most common cause for this blockage is a kidney stone, but scarring and blood clots can also cause acute unilateral obstructive uropathy. A blocked ureter can cause urine to go back up into the kidney, which causes swelling. This backflow of urine is known as vesicoureteral reflux (VUR).

Is surgery necessary for hydronephrosis?

Hydronephrosis is usually treated by addressing the underlying disease or cause, such as a kidney stone or infection. Some cases can be resolved without surgery. Infections can be treated with antibiotics. A kidney stone can pass through by itself or might be severe enough to require removal with surgery.

What does it mean when a fetus has an enlarged kidney?

Hydronephrosis is one of the most commonly diagnosed fetal anomalies and occurs when one or both of a baby’s kidneys become enlarged due to urine blockage. Normally, urine flows from the kidneys to the bladder through thin tubes called ureters.

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.

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 they tell if baby has Down syndrome ultrasound?

An ultrasound can detect fluid at the back of a fetus’s neck, which sometimes indicates Down syndrome. The ultrasound test is called measurement of nuchal translucency.

How is fetal hydronephrosis treated?

Prenatal hydronephrosis is often treated with antibiotics to prevent kidney infections. The specific antibiotics used have very few side effects. In a small portion of cases, usually grade IV prenatal hydronephrosis, surgery may be needed to correct the problem.

At what stage can Down syndrome be detected?

Diagnostic tests that can identify Down syndrome include: Chorionic villus sampling (CVS). In CVS, cells are taken from the placenta and used to analyze the fetal chromosomes. This test is typically performed in the first trimester, between 10 and 13 weeks of pregnancy.

How do you treat an enlarged kidney?

Treatment may include:Placing a stent (tube) through the bladder and ureter to allow urine to flow from the kidney into the bladder.Placing a tube into the kidney through the skin, to allow the blocked urine to drain out of the body into a drainage bag.Antibiotics for infections.More items…•