title: Ring chromosomes and leukaemia.
abstract: The observation of 2 leukaemic patients with ring chromosomes, and their comparison with a few previously reported cases, suggests a close association between this rare chromosomal abnormality and erythroleukaemia and indicate a poor prognostic significance of this finding.
mesh_terms: D000368:Aged; D001773:Blood Cells / Q000473:pathology*; D001853:Bone Marrow / Q000473:pathology*; D001854:Bone Marrow Cells; D002869:Chromosome Aberrations; D005260:Female; D006801:Humans; D007938:Leukemia / Q000235:genetics / Q000473:pathology*; D008297:Male; D011379:Prognosis