Ring Chromosome 20 Mosaicism in a Girl with Complex Partial Seizures
✍ Scribed by Irma Holopainen; Maila Penttinen; Taina Lakkata; Tuula Ä ärimaa
- Book ID
- 115266297
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 358 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0012-1622
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A 12-year-old girl with small stature and a hypertrophic clitoris was found to be mosaic for 45,X/46,X.dic(Y)(qtertop11:p11toqter)/46,XX/47,XX,dic(Y)(qtertop11:p11toqter). The dicentric chromosome was identified using Q-banding. These findings indicate mitotic instability of the dicentric Y, as well
Marker chromosomes present a problem in genetic counseling because there are often no clear phenotype-karyotype correlations. We present the clinical findings in a patient who is mosaic for a supernumerary marker chromosome 20 determined by fluorescence in situ hybridization (FISH) and compare these