Definition. HTML tag used to define the text in the top line of a Web browser, also used by many search engines as the title of search listings.
Oral cancer symptoms. Some of the most common oral cancer symptoms and signs include: 1  Persistent mouth sore: A sore in the mouth that does not heal is the most common symptom of oral cancer. 2  Pain: Persistent mouth pain is another common oral cancer sign.  A lump or thickening in the cheek.
Less common types of mouth cancer include: 1  oral malignant melanoma â where the cancer starts in cells called melanocytes, which help give skin its colour. 2  adenocarcinomas â cancers that develop inside the salivary glands.