Oral cancer

Oral cancer is a type of head and neck cancer that occurs in the mouth or lips, and is most often a squamous cell carcinoma.

Five-year oral cancer survival rates


Chart comparing all stages Gum Cancer UCHealth 53.8% survival rate to Colorado state average of 60.1%

Number of Patients Diagnosed –
UCHealth 48 – State of Colorado – 236
Number of Patients Surviving –
UCHealth 26 – State of Colorado – 142

Major salivary gland

Chart comparing all stages Major Salivary Gland Cancer UCHealth 49.8% survival rate to Colorado state average of 56.2%

Number of Patients Diagnosed –
UCHealth 56 – State of Colorado – 240
Number of Patients Surviving –
UCHealth 28 – State of Colorado – 135


Chart comparing all stages Tongue Cancer UCHealth 63.6% survival rate to Colorado state average of 66.5%

Number of Patients Diagnosed –
UCHealth 153 – State of Colorado – 705
Number of Patients Surviving –
UCHealth 97 – State of Colorado – 469

*n<30, 5 Year Survival – (Date of diagnosis 1/1/2010–12/31/2014)


Oral cancer, or mouth cancer, is cancer that develops in any of the parts of the oral cavity:

  • Lips
  • Gums
  • Tongue
  • Inner lining of the cheeks
  • Roof of the mouth
  • Floor of the mouth under the tongue

We still don’t know the exact cause, but oral cancer develops when cells from the lips or in the mouth develop mutations in their DNA and grow out of control. These abnormal mouth cancer cells can form a tumor and may spread inside the mouth and to other areas of the head and neck, or other parts of the body.

Mouth cancers most commonly begin in the flat, thin squamous cells that line your lips and the inside of your mouth, so most oral cancers are squamous cell carcinomas.

Types of oral cancer


Squamous cell carcinomas. More than 90% of oral cancers. The earliest form of squamous cell cancer is called carcinoma in situ, meaning that the cancer cells are only in the layer of cells called the epithelium. This is different from invasive squamous cell carcinoma, where the cancer cells have grown into deeper layers of the oral cavity.

Verrucous carcinoma. Less than 5% of all oral cancers. A low-grade or slow growing cancer that rarely spreads to other parts of the body, but it can grow deeply into nearby tissue.

Minor salivary gland carcinomas. Can start in the glands in the lining of the mouth and throat. There are many types of minor salivary gland cancers, including adenoid cystic carcinoma, mucoepidermoid carcinoma, and polymorphous low-grade adenocarcinoma.

Lymphomas. The tonsils and base of the tongue contain immune system tissue, or lymphoid tissue, where lymphomas can start.

Couple walking in the woods