Trisomy 9

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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.

Symptoms

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.

Detection

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.

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

de:Trisomie 9

Chromosomal abnormalities

Autosomal trisomies:

Down syndrome, Edwards syndrome, Patau syndrome, Trisomy 9, Warkany syndrome 2

Autosomal monosomies/deletions:

Wolf-Hirschhorn syndrome, Cri du chat, Angelman syndrome/ Prader-Willi Syndrome

X/Y linked:

Turner syndrome, Triple X syndrome, Klinefelter's syndrome, XYY syndrome

Translocations:

Philadelphia chromosome, Burkitt's lymphoma