title: [A pregnant woman with a blood vessel in the membrane].
abstract: In a 34-year-old woman with a dichorionic twin pregnancy, a velamentous insertion of the umbilical cord of the second twin was diagnosed with ultrasound. During caesarean section the second child was born within the membranes; the velamentous insertion was clearly visible.
authors.affiliation: Amphia Ziekenhuis locatie Langendijk, afd. Obstetrie en Gynaecologie, Breda.
authors.forename: Gerard-Peter  G M
authors.initials: GP
authors.lastname: Frank
authors.forename: Roger
authors.initials: R
authors.lastname: Heydanus
mesh_terms: D000328:Adult; D002585:Cesarean Section; D002823:Chorion / Q000098:blood supply*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011256:Pregnancy Outcome; D059285:Pregnancy, Twin; D014463:Ultrasonography; D014470:Umbilical Cord / Q000002:abnormalities* / Q000000981:diagnostic imaging*