title: Vaginal delivery through annular placenta -- case report.
abstract: Annular placenta is an extremely rare morphological type of human placenta. It is commonly related to placental vessel abnormalities frequently causing antenatal and postnatal hemorrhage and operative delivery. Gravida 4 para 1 had an uneventful course of pregnancy and normal vaginal delivery followed by moderate postpartum hemorrhage. Hemorrhage was found to be local in origin but the placenta was annular in shape and the newborn was delivered through one of the openings. Annular placenta was not recognized before delivery. Its implantation site was in the lower uterine segment but high enough to allow the passage of the fetus through its annular defect and vaginal birth. To our knowledge, this is a first report of annular placenta ending in normal vaginal delivery.
authors: Department of Obstetrics and Gynecology, Šibenik General Hospital, Šibenik, Croatia.
authors: Nikica
authors: N
authors: Živković
authors: Stipe
authors: S
authors: Krezo
authors: Ratko
authors: R
authors: Matijević
authors: Kresimir
authors: K
authors: Živković
mesh_terms: D000328:Adult; D000650:Amnion / Q000033:anatomy & histology; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D010920:Placenta / Q000002:abnormalities*; D006473:Postpartum Hemorrhage / Q000209:etiology; D011247:Pregnancy; D014599:Uterus
references: Zentralbl Gynakol. 1956 Dec 22;78(51):2029-32
references: 13410057
references: Int J Gynaecol Obstet. 1995 Dec;51(3):251-3
references: 8745092