title: Two cases of vasa previa diagnosed prenatally using three-dimensional ultrasonography.
abstract: We report two cases in which we describe the impact of sonography (US) in the management of vasa previa. In the first case, with two-dimensional US, the diagnosis of vasa previa was made at 21 weeks gestation. In the second case, using three-dimensional US, the diagnosis of vasa previa was made at 19 weeks gestation. An elective Cesarean section was carried out at 34 weeks in both cases. Diagnosis of vasa previa is critical when low-lying placenta or velamentous insertion of the umbilical cord is detected during the pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, Wakayama Medical University, School of Medicine, 811-1 Kimiidera Wakayama 641-0012, Japan.
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Mabuchi
authors.forename: Mareo
authors.initials: M
authors.lastname: Yamoto
authors.forename: Sawako
authors.initials: S
authors.lastname: Minami
authors.forename: Eiji
authors.initials: E
authors.lastname: Boshi
authors.forename: Shigetaka
authors.initials: S
authors.lastname: Yagi
authors.forename: Nami
authors.initials: N
authors.lastname: Oba
authors.forename: Kazuharu
authors.initials: K
authors.lastname: Tanaka
authors.forename: Naohiko
authors.initials: N
authors.lastname: Umesaki
mesh_terms: D000328:Adult; D002585:Cesarean Section; D003937:Diagnosis, Differential; D017558:Elective Surgical Procedures; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods*; D055949:Vasa Previa / Q000000981:diagnostic imaging*