Cloacal dysgenesis is frequently associated with uterine anomalies. We
report a case of pregnancy which resulted in an abortion in a woman w
ith a persistent cloaca. Presumptive diagnosis before operation was ec
topic pregnancy of the left tube. Postoperatively, the site of implant
ation of the conceptus was found to be the cavity of a unicornuate ute
rus in association with a rudimentary horn, the presence of which misl
ed us to diagnose an ectopic pregnancy.