Most IMT immunohistochemistry has shown that spindle tumor cells were positively labeled by VIM, SMA, and ALK antibodies; more specifically, VIM labeling is usually strongly positive and diffusely observed in the cytoplasm of spindle cells, SMA labeling is mostly focal or diffusely positive, and ALK protein is expressed in 50–60% of cells (8). The gene discussed is SMN1; the disease is neoplasm.