Abstract:About 1 in 1500 pregnancies have fetal megacystis discovered during the first trimester ultrasound. Because of obstructive or non-obstructive factors, the fetal bladder may appear enlarged. In the first instance, a lower urinary tract obstruction (LUTO) or obstruction of the bladder outlet causes an increase in hydronephrosis, increased renal parenchymal echogenicity, and oligohydramnios beginning in the second trimester. This condition is associated with poor postnatal renal function and high perinatal mortal… Show more
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