VIM and neoplasm: Immunoreactivity for vimentin (mouse anti-vimentin monoclonal antibody, clone V9; DakoCytomation, Glostrup, Denmark), muscle actin (mouse anti-human muscle actin monoclonal antibody, clone HHF35; DakoCytomation), and α-smooth muscle actin (mouse anti-human alpha smooth muscle actin monoclonal antibody, clone 1A4; Daco, Carpinteria, CA, USA) were positive in the tumor cells.