title: [Cytogenetic studies in clinical diagnosis --analysis of 1611 examination results].
abstract: An analysis of the frequency and type of chromosome aberrations found in 1611 cytogenetic studies has been done in relation to the clinical indications. The most frequent reason for referral was: MCM/MR syndrome (15.4% cases), suspicion of sex chromosome abnormality (13.1%), Down syndrome (11.2%) and reproductive wastage (10.6%). The incidence of abnormal karyotypes in these groups of patients was 10.1%, 24.2%, 87.9% and 9.3% per couple, respectively. The lowest percentage of chromosome aberrations was found among patients with nonspecific mental retardation (2.2%) and in the families who lost a baby with MCM Syndrome (3.3% per couple). On the whole, abnormal karyotype was found in 364 patients (22.6%). Among 62 families identified by the affected child with, structural chromosome aberration in 24 families (38.7%) the abnormality was familial in the origin.
authors.affiliation: Zakładu Genetyki Instytutu Matki i Dziecka.
authors.forename: E
authors.initials: E
authors.lastname: Bocian
authors.forename: T
authors.initials: T
authors.lastname: Mazurczak
authors.forename: H
authors.initials: H
authors.lastname: Stańczak
mesh_terms: D000328:Adult; D002648:Child; D002869:Chromosome Aberrations / Q000235:genetics*; D003582:Cytogenetics; D004314:Down Syndrome / Q000235:genetics; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D007621:Karyotyping; D008297:Male; D011218:Prader-Willi Syndrome / Q000235:genetics
vernacular_title: Badania cytogenetyczne w diagnostyce klinicznej--analiza 1611 wyników badań.