title: [Pathology of the yolk sac: endosonographic results].
abstract: The yolk sac is the first embryonic structure that is observed by vaginal sonography. It shows up between the fourth and fifth week as regular ring inside the gestational sac. In this study the normal growth of the yolk sac is standardised through the measuring of its diameter, perimeter and area from its appearance till the twelfth week. The aim of this work is to discover the alterations in its size and echographic picture, and to study their repercussions in the foetus.
authors.affiliation: Universitäts-Frauenklinik Valencia, Spanien.
authors.forename: F
authors.initials: F
authors.lastname: Bonilla-Musoles
authors.forename: M
authors.initials: M
authors.lastname: Sampaio
authors.forename: C
authors.initials: C
authors.lastname: Simon
authors.forename: V
authors.initials: V
authors.lastname: Serra
authors.forename: J
authors.initials: J
authors.lastname: Strasser
mesh_terms: D000033:Abortion, Threatened / Q000175:diagnosis*; D004624:Embryo Transfer; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011272:Pregnancy, Multiple / Q000502:physiology; D011296:Prenatal Diagnosis / Q000379:methods*; D014463:Ultrasonography / Q000379:methods*; D014621:Vagina; D015017:Yolk Sac / Q000473:pathology*
vernacular_title: Pathologie des Dottersackes: Endosonographische Ergebnisse.