Skin cancer is often categorized into either melanoma or non melanoma. Non melanoma skin cancer occurs in either basal or squamous cells. These cells are located at the base of the outer layer of the skin or cover the internal and external surfaces of the body. Non melanoma skin cancer is the most common type of cancer. It is very difficult to gather statistics on non melanoma skin cancer because it usually does not enter the cancer data collection system since It is usually treated successfully by dermatologists in their office and therefore does not require hospitalization. Therefore, non melanoma skin cancer statistics are mostly estimates. Most non melanoma skin cancers develop on sun exposed areas of the body, like the face, neck, and the backs of the hands.
The factors that increase the risk of developing non melanoma skin cancer include:
Most provincial/territorial cancer registries do not collect non melanoma skin cancer incidence data. Though these cancers are common, they are difficult to register completely because they are often treated successfully in a doctor's office and generally do not require hospitalization. As a result, the Canadian Cancer Society / National Cancer Institute of Canada, with one exception, does not include non melanoma statistics in their Canadian Cancer Statistics 2008 publication.
The one exception is Table 1 "Estimated New Cases and Deaths for Cancers by Sex, Canada, 2008". The estimated number of new cases of non melanoma skin cancer in 2008 are 40,000 men and 33,000 women. The estimated number of deaths from non melanoma skin cancer in 2008 are 160 men and 100 women.