My uncle (65 yrs) has focus of poorly differentiated squamous cell carcinoma at the base of the tongue. what does this mean?

Cancer: I'm sorry to hear about your uncle. Squamous cell carcinoma is a type of cancer that affects the head and neck. Risk factors for this cancer at the tongue base (the very back of your tongue) are tobacco, alcohol, and a virus called HPV. He should be seen by a head and neck surgeon to get further workup. The treatment depends on several factors such as the stage.