Oral cancer
gastrointestinal system cancer that is located in the oral cavity / From Wikipedia, the free encyclopedia
Oral cancer is cancer of any part of the mouth.[1] It can start in the mouth, lips, or the oropharynx (the part of the throat at the back of the mouth).
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A person can get oral cancer without having any other type of cancer. Oral cancer can also happen because of metastasis. This means that the person had cancer in some other part of their body, and it spread to the mouth. The person's cancer may be far away from the mouth, or it may be in a part of the body near the mouth. For example, if a person has cancer of the nasal cavity, the cancer can spread to the mouth.