title: Allantoid cyst in the umbilical cord diagnosed with B-flow ultrasound.
abstract: Allantiod cysts are true cysts in the umbilical cord. They arise from persistent structures of allantois, and the cysts are filled with urine because of a connection to the urinary bladder. Allantoid cysts are located centrally in the umbilical cord and separate the umbilical cord vessels. B-flow ultrasound is a new technique illustrating blood flow. This method is independent of the insonation angle and therefore superior to Doppler ultrasound visualising long segments of vessels with a winding course. The authors present a case with allantoid cysts diagnosed with B-flow ultrasound.
authors.affiliation: Department of Obstetrics and Gynecology, Stavanger University Hospital, Stavanger, Norway. tme@lyse.net
authors.forename: Torbjørn Moe
authors.initials: TM
authors.lastname: Eggebø
authors.forename: Hege Ulland
authors.initials: HU
authors.lastname: Dirdal
authors.forename: Philip
authors.initials: P
authors.lastname: Vonbrandis
mesh_terms: D000328:Adult; D000482:Allantois / Q000000981:diagnostic imaging* / Q000196:embryology / Q000473:pathology; D002585:Cesarean Section; D003937:Diagnosis, Differential; D004727:Endothelium / Q000473:pathology; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D007231:Infant, Newborn; D008297:Male; D010920:Placenta / Q000000981:diagnostic imaging; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D012422:Rupture, Spontaneous; D016216:Ultrasonography, Prenatal; D014470:Umbilical Cord / Q000000981:diagnostic imaging* / Q000196:embryology / Q000473:pathology; D014496:Urachal Cyst / Q000000981:diagnostic imaging* / Q000196:embryology / Q000473:pathology