• 作者：Raquel Moreno Molina ; Coral Bravo Arribas ; Mar Mu&#241 ; oz-Chá ; puli Gutié ; rrez ; Francisco Gá ; mez Alderete ; Eugenia Antolí ; n Alvarado ; Juan De Leó ; n-Luis ; ^{jdeleonluis@yahoo.es}
• 关键词：Arco aó ; rtico derecho ; Arteria subclavia aberrante izquierda ; Cardiopatí ; a congé ; nita ; Diagnó ; stico prenatal ; Ecocardiografí ; a ; Microdeleció ; n 22q11
• 刊名：Diagn¨®stico Prenatal
• 出版年：2013
• 出版时间：January-March, 2013
• 年：2013
• 卷：24
• 期：1
• 页码：32-35
• 全文大小：692 K

We report a case of prenatally diagnosed isolated right aortic arch (RAA) and describe the procedure for its ultrasound-guided diagnosis and clinical management. The ultrasound scan of a 20-week-old fetus revealed an isolated RAA. The diagnosis was achieved using the 3 vessels and trachea view, in which the aortic arch was visualized to the right side of the trachea. RAA is a rare finding (incidence, 0.1 % ) and its variants may cause compressive symptoms and be associated with congenital heart defects (up to 90 % ) and/or 22q11 microdeletion (up to 46 % ). The 3 vessels and trachea view is essential for the prenatal diagnosis of RAA. Detection of this condition must be considered an indication for fetal echocardiography, to distinguish its variants, and a genetic study is also recommended. Isolated RAA is usually asymptomatic, although the outcome of RAA associated with other abnormalities is uncertain.