Cytogenetic analysis of an abnormal newborn girl showed an extra chromosome with the characteristics of an isodicentric 9p chromosome [idic (9)(pter+ql&pter)] in 98% of peripheral lymphocyte metaphases examined. This cytogenetic interpretation was substantiated by quantitative measurement of erythro
Two cases of tetrasomy 9p syndrome with tissue limited mosaicism
✍ Scribed by Elisabet Lloveras; C. Pérez; F. Solé; L. Zamora; A. Lladonosa; B. Espinet; E. Silvestre; J. Serra; T. Vendrell; B. Fernández; M. Salido; A. Plaja
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 97 KB
- Volume
- 124A
- Category
- Article
- ISSN
- 1552-4825
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Tetrasomy 9p is a rare chromosomal aberration that was described in 28 previous patients. Here we report on a newborn girl who was referred for genetic evaluation because of developmental delay, hypertonicity, microcephaly, minor anomalies, and neurometabolic findings. She had an isochromosome 9p (p
## Abstract ## BACKGROUND The phenotypic expression of an additional chromosome 9 causes a very broad clinical spectrum of anomalies. The prognosis for infants with non‐mosaic tetrasomy 9p is poor, and they usually die at a very early age. ## CASE In this article we present a new case of complet
Tetrasomy of the short(p) arm of chromosome 9 has been reported in few cases. Most of these children present with microbrachycephaly, wide forehead, hypertelorism, lowset, malformed ears, beaked noses, and micrognathia. Additional anomalies include short neck, congenital heart disease, genital abnor