Conjoined twins detected in the first trimester: A review
"Conjoined twinning occurs in 1 in 100 sets of monozygotic twins, 1 in 50,000 gestations or I in 250,000 live births. With the advent of ultrasound technology, prenatal diagnosis of conjoined twins is possible. This article provides a comprehensive review of conjoined twins detected in the first trimester including fetal gender, maternal age, parity, types of fusion, related ultrasound abnormalities, perinatal outcome and association with assisted reproduction. Copyright (C) 2011, Taiwan Association of Obstetrics & Gynecology. Published by Elsevier Taiwan LLC. All rights reserved."