Chronic lymphocytic leukaemia with binucleated lymphocytes. 1997

I Amouroux, and H Mossafa, and O Gentilhomme, and R Girot, and G Flandrin, and X Troussard
Laboratoire d'Hématologie Biologique, Hôpital Antoine BéclèneClamart, Lyon, France.

Chronic lymphocytic leukaemia (CLL) is a monoclonal proliferation usually involving B cells and composed of mature lymphoid cells. Distinct morphologic subtypes have been recognized according to lymphocyte size, nuclear:cytoplastic ratio and nucleolus. However the presence of characteristically binucleated lymphocytes in patients fulfilling criteria for CLL diagnosis has never been described. We here report immunological and cytogenetic studies of four patients with CLL but with binucleated lymphocytes. Moreover, trisomy 12, known to be associated with atypical morphology in CLL, was detected in two of these four patients. We suggest that this be considered as a possible new entity.

UI MeSH Term Description Entries
D008214 Lymphocytes White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS. Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002467 Cell Nucleus Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed) Cell Nuclei,Nuclei, Cell,Nucleus, Cell
D002881 Chromosomes, Human, Pair 12 A specific pair of GROUP C CHROMOSOMES of the human chromosome classification. Chromosome 12
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D014314 Trisomy The possession of a third chromosome of any one type in an otherwise diploid cell. Partial Trisomy,Chromosomal Triplication,Chromosomal Triplications,Partial Trisomies,Trisomies,Trisomies, Partial,Trisomy, Partial

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