[Twin gestation in a single horn of a bicornuate uterus].

Bicornuate uterus is associated with early foetal loss and extremely preterm delivery. A patient with dichorionic twins in a single horn of a bicornuate uterus was admitted in week 24 + 6 with preterm labour. Long-term treatment with a combination of tocolytics, atosiban and diclofenac inhibited labour until week 26 + 3 where both babies were born. Both babies are still alive. Longterm tocolytic treatment may be successful in specific cases, but there is no evidence for a general use of long-term tocolysis in preterm labour.