Delayed interval delivery after intrauterine infection and immature birth of twin 1--a case report and literature review.

We report a case of delayed interval delivery in a twin pregnancy complicated by rupture of membranes, intrauterine infection and birth of one twin at 21 weeks gestation. Tocolysis combined with antibiotics and corticosteroids successfully prolonged pregnancy for 73 days, allowing the second twin to mature and reach viability. At 31.5 weeks gestation, a 1890 g healthy male neonate was born with good Apgar scores. His postnatal course was uneventful. A literature review of several other cases of delayed interval delivery is presented. When multifetal pregnancies are complicated by immature birth of one fetus, delayed interval delivery may offer survival chances and favourable outcome for the remaining fetus(es).