Pyelectasis

Pyelectasis is a condition that involves dilation of the renal pelvis and is often detected during prenatal ultrasound examinations. It is considered a soft marker in prenatal ultrasound for Down syndrome and other chromosomal abnormalities.

Definition

Pyelectasis is a condition that involves the dilation of the renal pelvis. It is often detected during prenatal ultrasound examinations. The renal pelvis is the part of the kidney where urine collects before it is funneled into the ureter, the tube that connects the kidney to the bladder.

Causes

The exact cause of pyelectasis is unknown. However, it is believed to be due to a temporary delay in the development of the kidneys. It is more common in male fetuses and is often associated with other abnormalities such as Down syndrome and other chromosomal abnormalities.

Diagnosis

Pyelectasis is usually diagnosed during a routine prenatal ultrasound. The condition is characterized by a dilation of the renal pelvis measuring more than 4 mm in fetuses less than 33 weeks gestation and more than 7 mm in fetuses more than 33 weeks gestation.

Treatment

In most cases, pyelectasis resolves on its own and does not require any treatment. However, if the condition persists or worsens, further testing may be required to rule out other potential causes such as a blockage in the urinary tract or a kidney infection.

Prognosis

The prognosis for pyelectasis is generally good. Most cases resolve on their own without any complications. However, if the condition is associated with other abnormalities such as Down syndrome, the prognosis may vary.

See also

• Prenatal diagnosis
• Ultrasound
• Down syndrome
• Kidney

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