Fig. 3

The pathological results of the resected tumor from the tongue base and pleural tumor tissue and immunohistochemical detection of the pleural tumor tissue. The tissue’s histopathology changes were observed in light microscope (Nikon Eclipse 80i, Tokyo, Japan) and photos were taken. Postoperative pathological results for the tongue base and pleural tumor tissue, respectively (a and b) (×200). The immunohistochemical results of the pleural tumor tissue are shown in c–f, which are S100, HMB-45, vimentin, and cytokeratin AE1/AE3, respectively, and the magnification are all of ×100