The tumor cells showed focal (<20% of the neoplastic cells), but strong, immunoreactivity for c-kit/CD117 (membranous) {Ventana}, vimentin (cytoplasmic and membranous) {Ventana}, epithelial membrane antigen (EMA) {cytoplasmic and membranous} [Ventana], and CD10 (membranous) {Ventana} [not shown]. This evidence concerns the gene MUC1 and neoplasm.