“…and undifferentiated carcinoma; basal cell carcinoma and lymphoepithelial carcinoma are less common, and the former occurs mostly in the facial skin. Squamous cell carcinoma of the oral and maxillofacial region (referred to as squamous cell carcinoma) occurs mostly in adults aged 40 to 60 years in China, more often in men than in women (1)(2)(3). The sites were the tongue, cheek, gingiva, palate, and maxillary sinus.…”