title: Dicephalus Parapagus Conjoined Twins Diagnosed by First-Trimester Ultrasound.
abstract: Conjoined twins are a rare phenomenon, occurring in 1% of monochorionic twin gestation, with an incidence of 1 : 50 000 to 1 : 100 000. Many conjoined twins have abnormalities incompatible with life, so early prenatal diagnosis is very important for optimal management of both pregnancy and delivery. We report a case of dicephalus parapagus conjoined twins, sharing a single heart, diagnosed at 12 weeks' gestation. With early ultrasound diagnosis, we were able to provide appropriate and timely prenatal counseling to the family.
authors.affiliation: Department of Obstetrics and Gynecology, Saitama City Hospital, Midori, Saitama 336-8522, Japan.
authors.forename: Keiko
authors.identifier: 0000-0002-1306-5255
authors.initials: K
authors.lastname: Watanabe
authors.affiliation: Department of Obstetrics and Gynecology, Saitama City Hospital, Midori, Saitama 336-8522, Japan.
authors.forename: Masanori
authors.identifier: 0000-0001-9249-6813
authors.initials: M
authors.lastname: Ono
authors.affiliation: Department of Obstetrics and Gynecology, Saitama City Hospital, Midori, Saitama 336-8522, Japan.
authors.forename: Mayu
authors.identifier: 0000-0001-5334-3224
authors.initials: M
authors.lastname: Shirahashi
authors.affiliation: Department of Obstetrics and Gynecology, Saitama City Hospital, Midori, Saitama 336-8522, Japan.
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Ikeda
authors.affiliation: Department of Obstetrics and Gynecology, Saitama City Hospital, Midori, Saitama 336-8522, Japan.
authors.forename: Kazumi
authors.initials: K
authors.lastname: Yakubo