title: First-trimester ultrasonic diagnosis of twin reversed arterial perfusion sequence.
abstract: Twin reversed arterial perfusion (TRAP) syndrome sequence is a rare specific anomaly of twin gestation with fused placentae and umbilical anastomosis. This syndrome occurs once in very 35,000-48,000 births and has been described in the second trimester (23-29 weeks of gestation). We report on early sonographic diagnosis (10 and 12 weeks' gestation) of two cases of TRAP sequence, together with their umbilical cord Doppler studies.
authors.affiliation: Obstetrics and Gynecology Department, Central Emek Hospital, Afula, Israel.
authors.forename: E
authors.initials: E
authors.lastname: Shalev
authors.forename: Y
authors.initials: Y
authors.lastname: Zalel
authors.forename: M
authors.initials: M
authors.lastname: Ben-Ami
authors.forename: E
authors.initials: E
authors.lastname: Weiner
mesh_terms: D000328:Adult; D005260:Female; D005333:Fetus / Q000002:abnormalities*; D006801:Humans; D010920:Placenta / Q000002:abnormalities*; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011272:Pregnancy, Multiple; D013577:Syndrome; D014427:Twins; D016216:Ultrasonography, Prenatal; D014472:Umbilicus / Q000002:abnormalities*