Frequency and distribution of megakaryoblasts in FAB subtypes of ANLL: an immunocytochemical ultrastructural study.

Abstract:

BACKGROUND:Identification of early megakaryocyte (MK) precursors is difficult and conflicting. The prevalence of leukemias with a megakaryocytic component may be underestimated when conventional techniques are utilized. The recent development of immuno-ultrastructural procedures for simultaneous detection of platelet peroxidase reaction and specific platelet membrane antigens has increased our capability of recognizing blast cells of the megakaryocytic lineage. METHODS:In this study the occurrence and distribution of megakaryoblastic in the FAB subtypes of adult "de novo" acute myeloid leukemias was employed to detect megakaryocytic precursors. RESULTS:A megakaryoblastic proliferation was demonstrated in 8/42 cases (19%), with a much higher percentage than previously reported and an unusual distribution in the M2 subtype. CONCLUSIONS:These findings indicate that megakaryocytic involvement may be found rather frequently when an immunocytochemical ultrastructural method is applied to the characterization of leukemias.

journal_name

Haematologica

journal_title

Haematologica

authors

Tomasi P,Tallarico A,Vasi V,Scapoli G,Castoldi G

subject

Has Abstract

pub_date

1993-03-01 00:00:00

pages

95-100

issue

2

eissn

0390-6078

issn

1592-8721

journal_volume

78

pub_type

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