Case Reports
Multiple congenital anomalies in a fetus with 45,X/46,X,r(X)(p11.22q12) mosaicism
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- PMID: 9600741
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Case Reports
Multiple congenital anomalies in a fetus with 45,X/46,X,r(X)(p11.22q12) mosaicism
Am J Med Genet.
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Abstract
Ring X chromosomes that do not undergo inactivation may cause malformations and mental retardation. We report on a fetus with anencephaly, total dorsal rachischisis, and diaphragmatic hernia that was found to have a mosaic 45,X/46,X,r(X)(p11.22q12) karyotype. Fluorescent in situ hybridization (FISH) confirmed that the ring chromosome was X-derived. This report expands the phenotypic spectrum of mosaic monosomy X and small ring X chromosomes.
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