Persistent cloaca and caudal duplication in a monovular twin
A cloaca occurs when genitourinary tract and bowel converge into a common channel.

This is a monochorinonic-diamniotic twin born at 36 weeks with apgars of 9/9. She had a duplicated labia with two clitorises, and a partially formed accessory foot with 2 toes protruding from the right gluteal region. There was anal atresia and a punctate urethral opening in the right genitalia through which she voided spontaneously. X-ray of the accessory foot had rudimentary metatarsals and phalanges. There was left hydroureteronephrosis and a hydrocolpos causing severe mass effect.

On the first day of life, she had exploratory laparotomy with a diverting colostomy and mucus fistula and drainage of hydrocolpos. At 6 months of age, she had removal of the accessory foot with flap closure of the perineal defect and vesicostomy. At 15 months of age she had laparotomy for repair of cloaca, excision of presacral pelvic mass and the duplicated vulva.

Source: International Journal of Surgery case reports

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