Trisomy 9
From Wikipedia, the free encyclopedia
| ICD-10 | Q92 |
|---|---|
| ICD-9 | 758 |
Trisomy 9 is a chromosomal disorder caused by having three copies (trisomy) of chromosome number 9. It can appear with or without mosaicism. 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. 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.
[edit] External links
- NORD - National Organization for Rare Disorders, Inc. Chromosome 9, Trisomy 9p (Multiple Variants)
- NORD - National Organization for Rare Disorders, Inc. Chromosome 9, Trisomy Mosaic
- Entrez PubMed "Antenatal detection of mosaic trisomy 9 by ultrasound: a case report and literature review."de:Trisomie 9
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