VIM and Ewing sarcoma: However, the subsequent histopathological examination indicated primary lumbar Ewing’s sarcoma with a vimentin-positive and microneme protein 2 (MIC2)-positive immunophenotype (Fig. 2E and F), for which the patient received 22 cycles of radiotherapy at a dose of 40 Gy and six cycles of chemotherapy, consisting of 2 mg vincristine, 0.7 mg dactinomycin, 700 mg cyclophosphamide and 40 mg adriamycin, over an 18-week period.