title: First-trimester ultrasonography revealed a gestational sac featuring cystic spaces and no visible embryo: a case of trisomy 7.
abstract: Ultrasound examination in early pregnancy has steadily gained importance and is now routine for most women in the first trimester. The sonographic features of early trisomy 7 pregnancies are not well characterized. We present a case of trisomy 7 in which early pregnancy ultrasound revealed a gestational sac featuring cystic spaces and no visible embryo. Based on comparison with a previously reported case of trisomy 7 featuring a multicystic anembryonic gestational sac we suggest that this ultrasonographic finding may be a sign of trisomy 7.
authors.affiliation: Department of Obstretrics and Gynecology, Fatih University, Ankara, Turkey.
authors.forename: Aysel
authors.initials: A
authors.lastname: Derbent
authors.affiliation: Department of Medical Genetics, Başkent University, Ankara, Turkey.
authors.forename: Zerrin
authors.initials: Z
authors.lastname: Yılmaz
authors.affiliation: Department of Obstretrics and Gynecology, Fatih University, Ankara, Turkey.
authors.forename: Serap
authors.initials: S
authors.lastname: Simavlı
authors.affiliation: Department of Medical Genetics, Başkent University, Ankara, Turkey.
authors.forename: Ozge
authors.initials: O
authors.lastname: Ozer
authors.affiliation: Department of Obstretrics and Gynecology, Fatih University, Ankara, Turkey.
authors.forename: Nilgün Öztürk
authors.initials: NÖ
authors.lastname: Turhan
keywords: Trisomy 7; early pregnancy failure; ultrasonography