Down's Syndrome with 47,XX,+21/47,XX,+mar Mosaicism

PTEN mosaicism with features of Cowden syndrome.

We present the first known case of somatic PTEN mosaicism causing features of Cowden syndrome (CS) and inheritance in the subsequent generation. A 20-year-old woman presented for genetics evaluation with multiple ganglioneuromas of the colon. On examination, she was found to have a thyroid goiter, macrocephaly, and tongue papules, all suggestive of CS. However, her reported family history was n...

NOD2 mosaicism in Blau syndrome

Introduction Gene mosaicism describes an individual who has developed from a single zygote and has two or more cell types with distinct genotypes. Three major types of mosaicism have been described and are referred as gonadal, somatic and gonosomic mosaicism. They mainly differ on the body distribution of the somatic mutation and in their clinical consequences. The recent use of next-generation...

Anesthetic consideration in downs syndrome--a review.

Downs syndrome constitutes to be the most common chromosomal disorder. Patients with Downs's syndrome are posted for several surgeries including dental procedures and even for facial reconstruction. They are associated with several congenital anomalies in different organ system. There is also increased incidence of atlanto axial instability and risk of spinal cord injury. These children are sus...

Parthenogenetic chimaerism/mosaicism with a Silver-Russell syndrome-like phenotype

INTRODUCTION We report a 34-year-old Japanese female with a Silver-Russell syndrome (SRS)-like phenotype and a mosaic Turner syndrome karyotype (45,X/46,XX). METHODS/RESULTS Molecular studies including methylation analysis of 17 differentially methylated regions (DMRs) on the autosomes and the XIST-DMR on the X chromosome and genome-wide microsatellite analysis for 96 autosomal loci and 30 X ...

Trisomy 3 mosaicism in a patient with Bartter syndrome.