Can Oral Cancer Be Cured Without Surgery – Oral cancer (Oropharyngeal cancer) is commonly known as mouth cancer as well. It affects the back of your mouth and the tissues of your throat. Mouth cancer is a type of cancer that affects any part of the oral cavity. Mouth cancer can affect any of the following areas: Lips, Gums, Tongue, Inner lining of the cheeks, Roof of the mouth, and Floor of the mouth (under the tongue). Mouth cancer belongs to a group of cancers known as head and neck cancers. Oral cancer and other types of head and neck cancer are often treated in the same way.