<prompt> A 63-year-old bartender presents at his physicians office complaining of a painful sore on his tongue. On examination, it is found that he has an ulcerated lesion on his tongue and a mass in the submandibular gland triangle. What is the most likely diagnosis? SELECT ONE.LymphomaSquamous cell carcinomaMetastatic skin cancerBenign mixed tumor  <response>: The tip of the tongue drains into the submental lymph nodes, whereas, the side of the tongue drains into the submandibular lymph nodes. 