[Cytology and immunophenotype features of hairy cell leukeamia: about 6 cases]

Hairy cell leukemia is a rare lymphoproliferative disorder. With cytological and immunophenotypic features. We report 6 cases of hairy cell leukemia diagnosed in the Biological Department of Hematology at the Aziza Othmana Hospital of Tunis. Hairy cells was observed in blood smears of 5 cases. Flow cytometry analysis shown a monoclonal population B while gatinting on the expression of the CD19 and SSC signal. The positivity of the CD 103 is noted in 5 cases and the CD11c signal is intense in all the cases. Immunophenotype is of great interest in the diagnosis of hairy cell leukemia