1.
Ann Pathol
; 28(1): 27-31, 2008 Feb.
Article
in French
| MEDLINE
| ID: mdl-18538711
ABSTRACT
Hematogones are bone marrow precursors of B-lymphoid cells which are morphologically difficult to distinguish from blasts and/or from small lymphocytes. We report the case of a patient presenting idiopathic myelofibrosis with minimal myeloid blastic transformation causing severe pancytopenia, treated by allograft and showing in a bone marrow biopsy, a hyperplasia of B-lymphoid cells. Histopathology and immunohistochemistry identified these cells as hyperplasia of hematogones and not a transformation into lymphoblastic acute leukaemia. The cytology of a myelogram confirmed the diagnosis.