title: Unusual chromosomal changes in polycythaemia vera.
abstract: Of 13 cases of polycythaemia vera in which direct bone marrow culture was carried out for chromosome analysis, a consistent count of 48 chromosomes was found in two on admission to the hospital. Neither patient showed evidence of blastic transformation.
mesh_terms: D000368:Aged; D001854:Bone Marrow Cells; D002869:Chromosome Aberrations; D002900:Chromosomes, Human, 1-3; D002902:Chromosomes, Human, 16-18; D002905:Chromosomes, Human, 4-5; D002906:Chromosomes, Human, 6-12 and X; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008875:Middle Aged; D011087:Polycythemia Vera / Q000235:genetics*