An extensive immunohistochemistry study was made including S100, SOX 10, NSE, CD163, B-catenin, CD57, CD99, CD34, actin, desmin, Myo D1, myogenin, calponin, lysozyme, ERG, Fli 1, TLE-1, EMA, INI-1, bcl2, CD57 in order to exclude other spindle cell sarcoma. The gene discussed is B3GAT1; the disease is spindle cell sarcoma.