title: Monoamniotic twins discordant for body stalk anomaly.
abstract: Body stalk anomaly is a rare malformation. This anomaly in monozygotic twins is extremely unusual. We describe a case of monoamniotic pregnancy discordant for body stalk anomaly diagnosed at 11 weeks. Ultrasound showed a fetus with a large anterior abdominal wall defect, anomaly of the spine and no evidence of lower extremities and other with a normal morphology. As far as our concern, only three monoamniotic pregnancies discordant for this malformation were reported. Our case represents the fourth reported monoamniotic pregnancy discordant for body stalk anomaly with diagnosis made by ultrasound and the second diagnosed in the first trimester.
authors.affiliation: Obstetric Department A, Centro Hospitalar e Universitário de Coimbra , Coimbra , Portugal.
authors.forename: Mariana Vide
authors.initials: MV
authors.lastname: Tavares
authors.forename: Ana Patrícia
authors.initials: AP
authors.lastname: Domingues
authors.forename: Margarida
authors.initials: M
authors.lastname: Tavares
authors.forename: Etelvina
authors.initials: E
authors.lastname: Fonseca
authors.forename: Paulo
authors.initials: P
authors.lastname: Moura
mesh_terms: D009008:Abnormalities, Severe Teratoid / Q000000981:diagnostic imaging*; D000328:Adult; D005260:Female; D006801:Humans; D011247:Pregnancy; D059285:Pregnancy, Twin; D014430:Twins, Monozygotic; D014463:Ultrasonography
keywords: Body stalk anomaly; monoamniotic pregnancy; prenatal diagnosis; ultrasound