<prompt> Which ca has the best prognosis -Carcinoma LipCarcinoma CheekCarcinoma TongueCarcinoma palate  <response>: Carcinoma of the oral cavityA most common type of carcinoma of the oral cavity is squamous cell carcinomaIn the oral cavity, tongue 30 is the most common site followed by the lip 17.4 and the floor of mouth 16.4The mortality from squamous carcinoma also varies by the site in the mouth, with the lowest mortality from lip cancer and the highest for cancer of the Tongue. 