In utero urinary bladder perforation, urinary ascites, and bilateral contained urinomas secondary to posterior urethral valves: clinical and imaging findings.

We report on a rare in utero appearance of urinary bladder perforation, urinary ascites, and bilateral contained urinomas secondary to posterior urethral valves. The findings on prenatal sonography, postnatal voiding cystourethrography, and magnetic resonance imaging are described.