We present four patients with acute nonlymphocytic leukemia, one M2 and three M4 French-American-British (FAB) types and one patient with refractory anemia with excess of blasts in transformation who at diagnosis had trisomy of chromosome 4 as the primary karyotypic anomaly. This chromosome anomaly probably defines a previously undescribed subset of acute nonlymphoid leukemias. Hematologic char...

Mutations within the RIEG1 homeobox gene on chromosome 4q25 have previously been reported in association with Rieger syndrome. We report a 3' splice site mutation within the 3rd intron of the RIEG1 gene which is associated with unilateral Peters' anomaly. The mutation is a single base substition of A to T at the invariant -2 site of the 3' splice site. Peters' anomaly, which is characterised by...

OBJECTIVE To investigate how the prenatal diagnosis of a sex chromosome anomaly is first communicated to parents. DESIGN Health professionals were interviewed by telephone and the conversation was taped; parents were sent questionnaires at 1 month after diagnosis and those who responded were sent another at 6 months. PARTICIPANTS 29 health professionals who had recently informed parents tha...

Complex karyotypes are often seen in primary surface epithelial ovarian tumors (SEOTs). Conventional cytogenetic as well as fluorescence in situ hybridization analyses coupled with loss of heterozygosity studies identified abnormalities of chromosome 6 as one of the most frequent lesions in these types of tumors. We performed cytogenetic analysis of direct preparations from 40 SEOTs, including ...

Although trisomy 18 (Edwards' syndrome) or the terminal deletion syndromes of 18p and 18q have been occasionally detected, pseudoisodicentric chromosome 18 is a very rare constitutional chromosomal abnormality. We describe a case of pseudoisodicentric chromosome 18q without mosaicism, which was confirmed from fetal cells in the amniotic fluid used for prenatal diagnosis of multiple congenital a...

A cytologic and cytogenetic study of 10 cases of acute myeloblastic leukemia with maturation and t(8;21) translocation is reported. Despite a certain polymorphic appearance, the characteristic cytologic picture, consisting essentially of large myeloblasts with an abundant cytoplasma containing a large Auer rod, allowed the presence of the chromosome anomaly to be predicted. t(8;21) translocatio...

This paper reports a case of partial trisomy involving the proximal segment of the long arm of chromosome 13. Kleeblattschädel anomaly was one of the many anomalies found in conjunction with this syndrome. The cytogenetic classification of the extra partial chromosome was based on trypsin-giemsa banding patterns and a paternal translocation involving chromosomes 3 and 13.

BACKGROUND/AIM To investigate the diagnostic value of bacterial artificial chromosome (BAC)-based array comparative genomic hybridization (CGH) and chromosome analysis in prenatal diagnosis. MATERIALS AND METHODS This study included the chromosome analysis and BAC-based array CGH analysis of 140 amniocentesis samples with prenatal diagnosis indications. RESULTS Karyotype analysis showed tri...