Dicephalus-Parapagus twins: a rare case

Conjoined twins are a rare complication of monozygotic pregnancies that occur when zygote division occurs after the 14th post-conception day. These twins are classified according to the anatomical site conjoined. We present an image issue of a 33-year-old nulliparous, with unremarkable previous medical history and a spontaneous pregnancy. In the first-trimester ultrasound she was diagnosed with a Dicephalus-Parapagus conjoined twin pregnancy: they shared a common heart, dia-phragm, gastrointestinal system and had two upper and lower limbs. These conjoined twins had a poor prognosis and post-natal separation was considered not viable. After counselling the parents, pregnancy was terminated upon their request.