The coexistence of double aneuploidy of Down and Turner syndromes is rare; most cases have been due to double mitotic errors. The objective of the study was to report a case with monosomy of the X chromosome and trisomy of chromosome 21, in mosaic variety, highlighting the phenotypic effect that the pres...
Resumen Introducción: El Síndrome de Turner (ST) es una alteración cromosómica sexual causada por la ausencia parcial o completa del cromosoma X, además de mosaicismos y otras alteraciones estructurales del cromosoma X o Y; está presente en 1 de 2500 nacidas vivas. Objetivo: Describir las variantes...
ABSTRACT Objective: To investigate the presence of chromosome mosaicism, especially for the presence of Y derived material in 45,X women with Turner syndrome (TS). Materials and methods: FISH and PCR were performed for the presence of chromosome mosaicism and Y-derived-material and genetic findings wer...
Abstract Introduction: Turner syndrome is a frequent genetic disorder that affects female individuals and covers a large phenotypic variability. Scientific literature suggests an association between hearing loss and Turner syndrome, but it remains a controversial topic. Objective: To associate the cyto...
ABSTRACT BACKGROUND: Turner syndrome (TS) is a rare genetic disease. Understanding its clinical findings contributes to better management of clinical conditions. OBJECTIVE: To investigate the clinical and karyotypic characteristics of patients diagnosed with TS at two reference services for clinical ge...
Turner syndrome (TS) is a common disorder (1/2.000 women) that affects multiple organs at different stages of life and needs a multidisciplinary approach. It can be present in women of all ethnicities and is caused by a monosomy of the X chromosome that causes a haploinsufficiency of certain genes. Its m...
La reciente introducción de las pruebas prenatales no invasivas (NIPT, por sus siglas en inglés) basadas en el ADN libre ofrece un método más preciso que los métodos tradicionales de detección en el suero materno para identificar aneuploidías fetales. La eficacia de las pruebas NIPT para detectar ...
El síndrome de Turner tiene una prevalencia de 1 en 1800 a 5000 recién nacidos vivos femeninos y se caracteriza por la ausencia total o parcial del segundo cromosoma X. Actualmente se reconoce gran variedad en la presentación citogenética, siendo la más común la monosomia del X (45,X) y entre las m...
