Fig. 3

Histopathological findings of the resected tumor. The low-power field image shows that both a carcinomatous component (a) and a sarcomatous component (b) are found in the tumor. The high-power field image shows that the squamous cell carcinoma component exhibits dense hyperchromatic nuclei with a high nucleocytoplasmic ratio. The sarcomatous component shows spindle-shaped cells with nuclear atypia