Trisomy 9 syndrome

Abstract
An infant is described with multiple congenital anomalies associated with mosaic trisomy 9. Review of the 3 previously reported cases of trisomy 9 shows that these patients have several common features which make trisomy 9 a clinically distinct syndrome. The frequently encountered findings are: upward-slanted eyes, small palpebral fissures, enophthalmos or microphthalmos, broad base and prominent tip of the nose, microcephaly, micrognathia, low-set malformed ears, high-arched palate, congenital heart disease, skeletal and genito-urinary anomalies, abnormal palmar creases, failure to thrive, hypotonia and retardation.

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