A case of nonleukemic myeloid sarcoma with FIP1L1-PDGFRA rearrangement: an unusual presentation of a rare disease..     ///    "To our knowledge, this is the first case of a nonleukemic myeloid sarcoma with the FIP1L1-PDGFRA rearrangement. "    ///    Fluorescent in situ hybridization studies demonstrated that both bone marrow hematopoietic precursors and blasts of the myeloid sarcoma were positive for FIP1L1-PDGFRA rearrangement. 