Myeloid populations in myeloproliferative disorders

From: Emanuel Raniolo (emanuel.raniolo@imvs.sa.gov.au)
Date: Thu Oct 03 2002 - 19:52:26 EST


Hi Everyone

Can anyone fill me in on the identity of a cell population that I have seen
recently in 2 patients with myeloproliferative disorders.
The first patient was a chronic phase CML, the bone marrow of which
displayed a CD45+dim (slightly less than lymphocytes), intermediate side
scatter (less than monocytes) population on CD45/Log SS analysis. This
population represented approximately 3% of all histogram events. The
phenotype was CD13+ CD33+ CD11b+ CD15- CD14- CD34- CD117-.
The second patient (primary thrombocythemia) bone marrow displayed a
similarly positioned numerically smaller population comprising 1% of all
histogram events. This patient was not extensively phenotyped, but again
this population was CD13+ CD34-.

Has anyone seen these populations previously in their analysis. Do they
represent a mature or immature myeloid population?

Your responses would be appreciated. Thankyou.

Emanuel Raniolo
Cell Analysis and Cyopreservation Laboratory
Department of Haematology, IMVS Laboratories
The Queen Elizabeth Hospital Division
Woodville, South Australia.



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