Seventeen pregnancies with a 45,X cell line were identified on cytogenetic analysis of fetal cells at the Genetic Diagnostic Centre, Alsancak-Izmir, Turkey, during the period 2000-2005. Data collected included indications for prenatal cytogenetic testing, presence of characteristic abnormal findings on fetal ultrasound examination, parental decisions of whether to continue or terminate the pregnancy and maternal age.
The chromosomal analysis of fetal cells were per­formed using G-banding techniques. For each patient at least 20 mitoses were evaluated. In cases of mosaicism 100 mitoses were examined to determine the proportion of the mosaic cell line. Ultrasonographic findings detected by a gynecologist, demographic data of the mothers and reasons for referral were extracted from the patients’ records.