cancer of the upper roof of the mouth
Mouth cancer â white patches. Mouth cancer signs may include bleeding, swelling, white patches or redness in your mouth. Mouth cancer signs may include red sores that don't heal. Mouth cancer refers to cancer that develops in any of the parts that make up the mouth. Cancer that occurs on the inside of the mouth is sometimes called oral cancer or oral cavity cancer. Mouth cancer is one of several types of cancer grouped in a category called head and neck cancers. Mouth cancer and other head and neck cancers are often treated similarly. Mayo Clinic's approach.