Female infant with a single perineal opening

Lateral view (left) from a colostogram (lower left contrast collection) shows a rectovesical fistula with contrast filling the patient’s bladder (upper left contrast collection). Oblique view from later in the study (right) shows a filled bladder with a competent bladder neck, a long urethra-urogenital sinus and possibly a rudimentary vagina.

The diagnosis was cloacal malformation.