9833/3 Prolymphocytic leukemia, B-cell type


Tumours of haematopoietic and lymphoid tissues
ICD-O-3 topography code: C42 and C77
ICD10: C91.3

/span>-cell prolymphocytic leukaemia (B-PLL) is a neoplasm of B prolymphocytes affecting the peripheral blood (PB), bone marrow (BM) and spleen. Prolymphocytes must exceed 55% of lymphoid cells in the PB. Cases of transformed chronic lymphocytic leukaemia (CLL), CLL with increased prolymphocytes and lymphoid proliferations with relatively similar morpho?logy but carrying the t(11;14)(q13;q32) translocation are excluded.