What causes mild pyelectasis at 24 weeks of pregnancy?

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I read your query and understand your concern. When the pelvis of the kidney is stretched or enlarged, but not enlarged enough for doctors to diagnose hydronephrosis, it is considered pyelectasis. Pyelectasis also is known as renal pelvic dilatation. (Dilatation means stretching or enlargement). The amount of stretching of the renal pelvis with pyelectasis is typically defined as greater than 4 mm but less than 10 mm in a baby younger than 24 weeks of gestation. Enlargement of four to 10 mm also may be called mild hydronephrosis. In 90 percent of cases, this condition will improve by itself and never become hydronephrosis. However, in 10 percent of cases, the dilatation will increase and hydronephrosis will be diagnosed. I hope I am able to help you. Feel free to get back for more queries.

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