DOUBLE ANEUPLOIDY 48,XXY,+21 ASSOCIATED WITH
A CONGENITAL HEART DEFECT IN A NEONATE
Shu X, Zou C, Shen Z*
*Corresponding Author: Zheng Shen, M.D., The Children’s Hospital of Zhejiang University School of Medicine,
57 Zhugan Xiang, Hangzhou 310003, People’s Republic of China; Tel.: +86-13575743518; Fax: +86-571-
87033296; E-mail: shenzheng@tom.com
page: 85
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Abstract
A neonate with a double aneuploidy associated
with congenital heart defect (CHD) suffered
from cyanosis after birth. He had typical features
of Down syndrome (DS) including hypertelorism,
slightly lowset ears with protruding pinna. Doppler
echocardiography indicated complex congenital heart
disease with an ostium secundum atrial septal defect,
enlarged right ventricle, and mild tricuspid valve regurgitation.
Further chromosomal analysis showed
a karyotype of 48,XXY,+21: a double aneuploidy of
DS and Klinefelter syndrome (KS). Until now, only
seven cases of double aneuploidy associated with
CHD defect have been reported.
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