Trisomy 9: a case report

Document Type



Pathology and Microbiology; Haematology/Oncology


Chromosomal aberrations are one of the most frequent causes of multiple congenital malformations and mental retardation. Trisomy 21, 18 and 13 are the most common varieties of autosomal trisomy recognized at birth; most of the others lead to spontaneous abortions in the first trimester’. Full trisomy 9 is rare in live born infants, but trisomy 9 mosaic ism has been reported and compatible with life. Unlike trisomy 21, 18 and 13, the range of clinical manifestation has not been well described, especially with respect to mental status1,2.

Publication (Name of Journal)

Journal of Pakistan Medical Association