All of the following immunohistochemical markers are positive in the neoplastic cells of granulocytic sarcoma, except -

Granulocytic sarcoma (Chloroma or myeloblastoma) Granulocytic sarcoma or chloroma is a solid tumor composed of myeloblasts. A chloroma is an extramedullary manifestation of AML, i.e., it is a solid collection of leukemic cells occurring outside of the bone marrow. These tumor often have a green tint due to the presence of myeloperoxidase. Chloromas are more common in monocytic differentiation (M4 & M5 type) AML. Though chloromas occur most commonly in patients with AML, they may also occur in a patient with : - Myelodysplastic syndrome Myeloproliferative syndromes → Myelofibrosis, CML, Polycythemia Vera, Essential thrombocytosis Without concomitant disease, i.e., Primary chloroma. Chloromas are positive for : - CD 68            CD 20                    CD 117                                Lysozyme CD 43            CD 34                    Myeloperoxidase