Mosaic Ring Chromosome 18, Ring Chromosome 18 Duplication/Deletion and Disomy 18: Perinatal Findings and Molecular Cytogenetic Characterization by Fluorescence In Situ Hybridization and Array Comparative Genomic Hybridization

Abstract excerpt

OBJECTIVE: To present the perinatal findings and molecular cytogenetic analysis of a rare chromosomal abnormality involving structural and numerical abnormalities of chromosome 18. MATERIALS, METHODS AND RESULTS: A 36-year-old woman, gravida 5, para 3, underwent amniocentesis because of her advanced maternal age. Amniocentesis revealed a karyotype of 46,XY,r(18) [27]/45,XY,-18[5]/46,XY[5]. The parents decided to...

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