期刊
AMERICAN JOURNAL OF CLINICAL PATHOLOGY
卷 114, 期 5, 页码 807-811出版社
AMER SOC CLIN PATHOLOGISTS
DOI: 10.1309/WWW7-DG6X-HC16-D7J2
关键词
immunophenotypic profile; granulocytic sarcoma; lineage differentiation
类别
The present study was designed to evaluate the lineage differentiation (particularly monocytic differentiation) of immature myeloid cells in granulocytic sarcoma (GS) by immunohistochemistry and correlate the results with lineage differentiation of blasts in the bone marrow and to determine the degree of maturation of the infiltrating myeloid cells in GS by immunohistochemistry using CD34 and HLA-DR. Immunohistochemical stains were performed on paraffin-embedded tissue from 17 GS lesions with lineage-associated markers: myeloperoxidase, CD68 (KP1), CD68 (PG-Ml), glycophorin A, factor VIII, and CD56; and with markers for blasts and immature myeloid cells: CD34 and HLA-DR. Our results show that positive staining with PG-MI, but not KPI, suggests monocytic differentiation of myeloid cells in GS and correlates with the monocytic differentiation of blasts in the bone marrow Expression of CD56 is frequent in GS, especially when the marrow blasts have monocytic differentiation and should not be interpreted as a primary natural-killer cell process. The immature myeloid cells in CS are frequently HLA-DR positive. However, CD34 positivity of the immature myeloid cells is relatively uncommon, except in cases with underlying myelodysplastic syndrome or chronic myelogenous leukemia.
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