Food energy is potential energy that animals (including humans) derive from their food through the process of cellular respiration.
The three kinds of treatment used for tongue cancer are: 1  Surgery: removal of the cancerous tumor and surrounding tissue. 2  Radiotherapy: uses high-energy particles from radioactive elements to kill cancerous cells left behind after surgery.
This 62-year-old man with metastatic colon cancer developed these tongue lesions. Darkening of the tongue may occur after chemotherapy with fluorouracil (5-FU). These tongue lesions can also be seen in patients on docetaxel for metastatic prostate cancer.