title: Absence of a specific chromosomal marker in essential thrombocythemia.
abstract: In 33 patients with essential thrombocythemia, a specific chromosomal abnormality ( 21q -) could not be confirmed. All patients in this series met rigid criteria for diagnosis of this myeloproliferative disorder.
mesh_terms: D001853:Bone Marrow / Q000503:physiopathology; D002478:Cells, Cultured; D002869:Chromosome Aberrations; D002871:Chromosome Banding; D025063:Chromosome Disorders; D002904:Chromosomes, Human, 21-22 and Y; D006801:Humans; D013922:Thrombocytosis / Q000175:diagnosis / Q000235:genetics*