Pathology – MCQ 51 – Immunohistochemical markers in granulocytic sarcoma

All of the following immunohistochemical markers are positive in the neoplatic cells of granulocytic sarcoma, except:
A. CD 45 RO
B. CD 43
C. Myeloperoxidase
D. Lysozyme

Correct answer : A. CD 45 RO

CD 45 RO is a marker of T cell lymphoma and is usually absent in granulocytic sarcoma.

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