Immunohistochemical analyses revealed that the tumor cells were negative for AFP, HepPar-1, CEA, GPC-3, CK19, CK20, Syn, CgA, and CD56 but positive for CK7, Vimentin, and Ki-67, with a Ki-67 expression level of approximately 45% (Figure 2). Here, MKI67 is linked to neoplasm.