Immunohistochemical results showed that the tumor cells positively expressed epithelial membrane antigen (EMA), thyroid transcription factor 1 (TTF1), NapsinA (epithelial cells) and cytokeratin 7 (epithelial cells), while negatively expressed chromogranin A (CgA) and synaptophysin (Syn). Here, MUC1 is linked to neoplasm.