What Is Pelviectasis?

What is Pelviectasis?

Pelviectasis, also refer to as fetal pelviectasis or renal pelvis dilation, is a mild enlargement of the central area, or “pelvis” of the kidney. The disorder occurs in 1% of pregnant women and more likely appears in male rather than in female fetuses.


  • Structural defects, such as duplicated kidneys;
  • Association with true renal pathology and other fetal anomalies.


Pelviectasis is usually diagnosed by ultrasound (sonogram) examination before birth.


  • After diagnosis, further treatment is not necessary if the clinical findings disappear by itself, because it won’t have any negative effect on the baby.
  • Babies with pyelectasis who are chromosomally normal are more prone to urologic problems, which may require surgery after birth if the collection of fluid in the kidneys does not drain and continues to increase throughout pregnancy.

Please go to see a doctor for professional help if you are worried about the condition.

Key words: Pelviectasis; fetal pelviectasis; renal pelvis dilation.

* The Content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.