Figure 1: Typical tongue cancer cases showing a) Superficial, b) Exophytic, and c) Endophytic growth patterns. a) Tumors with superficial growth patterns exhibit no elevation from the surrounding mucosa or a palpable tumor but may exhibit occasional erosion or white spots. b) Tumors with exophytic growth patterns expand outward from the tongue. Induration inside the tongue is smaller than the main tumor outside of the original tongue. c) Tumors with endophytic growth patterns exhibit the tumor mainly as an induration inside the tongue.