The biopsy results (Figure 3A) revealed a mesenchymal malignant tumor, tumor cell cytoplasm transparent or red staining, some showed acinar arrangement, tumor cell immunophenotype: CK (−), Vim (+), CD34 (+), MyoD1 (plasma +), SMA (focal +), CD56 (−), CgA (−). This evidence concerns the gene MYOD1 and neoplasm.