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Chromosome 9.svg|
Trisomy 9
ICD-10 Q92
ICD-9 758
OMIM [1]
DiseasesDB 32657
MedlinePlus [2]
eMedicine /
MeSH {{{MeshNumber}}}


Trisomy 9 is a chromosomal disorder caused by having three copies (trisomy) of chromosome number 9. It can appear with or without mosaicism.

SymptomsEdit

Symptoms vary, but usually result in dysmorphisms in the skull, nervous system, and mental retardation. Dysmorphisms in the heart, kidneys, and musculoskeletal system may also occur.

DetectionEdit

It can be detected prenatally, such as with chorionic villus sampling and cordocentesis, and can be suggested by obstetric ultrasonography.

Because trisomy 9 may appear with mosaicism, it is suggested that doctors take samples from multiple tissues when karyotyping for diagnosis.[1]

ReferencesEdit

  1. Stipoljev F, Kos M, Kos M, Miskovi B, Matijevic R, Hafner T, Kurjak A (2003). Antenatal detection of mosaic trisomy 9 by ultrasound: a case report and literature review. J Matern Fetal Neonatal Med 14 (1): 65-9. PMID 14563095.

External linksEdit

de:Trisomie 9


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