title: Complications of monochorionic twins.
abstract: Sonography has made a dramatic impact on the obstetric management of complicated twin pregnancies. This is based in part on the ability to use prenatal US to diagnose syndromes and complications of MC twinning. All twin pregnancies are at high risk for perinatal morbidity and mortality compared with singleton gestations, but when one of the described complications is recognized, the difficulties in management are compounded dramatically. Despite the relative rarity of some of the entities described, it is vitally important to be familiar with these problems and their sonographic evaluation and diagnosis.
authors.affiliation: Department of Radiology and of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, Medical Center, Box 0628, 505 Parnassus Avenue, Room L-374, San Francisco, CA 94143-0628, USA. Vickie.Feldstein@radiology.ucsf.edu
authors.forename: Vickie A
authors.initials: VA
authors.lastname: Feldstein
authors.forename: Roy A
authors.initials: RA
authors.lastname: Filly
mesh_terms: D004200:Diseases in Twins / Q000175:diagnosis* / Q000196:embryology; D004622:Embryo, Mammalian / Q000098:blood supply; D005260:Female; D006801:Humans; D010920:Placenta / Q000098:blood supply; D021041:Placental Circulation; D010929:Placentation / Q000502:physiology; D011247:Pregnancy; D011272:Pregnancy, Multiple / Q000502:physiology; D013577:Syndrome; D014430:Twins, Monozygotic; D016216:Ultrasonography, Prenatal