中文 Bahasa What is tongue cancer? Tongue cancer occurs when cells on the tongue become cancerous and form a tumour. In majority of the cases, the tumour is located at the anterior tip and sides (border) of the tongue. About half of all tongue cancers are on the back portion of the tongue. Sometimes, tongue cancer happens in people with a condition called "leukoplakia” where white patches are found on the tongue surface. What are the risk factors of tongue cancer? Tobacco use: