A tumor mass composed of myeloblasts, neutrophils and neutrophil precursors. granulocytic sarcoma is the most common type of myeloid sarcoma. (who, 2001) check for "https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/c35815" active clinical trials using this agent. ("http://ncit.nci.nih.gov/ncitbrowser/conceptreport.jsp?dictionary=nci%20thesaurus&code=c35815" nci thesaurus)