Article révisé par les pairs
Résumé : Three cases of biphenotypic CD2 or CD8 positive chronic lymphocytic B-cell leukaemias are reported. This represents an incidence of 15% in the authors' series, a frequency never mentioned previously. CD2 expression could be an example of asynchronous expression of an early pre-B antigen. CD8 expression might probe a true mixed lineage phenotype. These aberrant phenotypes were not associated with any peculiar clinical presentation.