Melanoma is a Common Cancer in Canada
Skin cancer of all types is widespread across Canada, and melanoma alone accounts for roughly 11,300 new cases each year. Up to one in 24 Canadians will receive a melanoma diagnosis at some point in their lives.
Incidence and Lifetime Risk
Melanoma is relatively common, affecting a significant portion of the population. Because it can develop rapidly, awareness of its prevalence is essential for public health.
Why Early Detection Matters
When caught early, melanoma and other skin cancers are generally curable. However, if the disease spreads to other parts of the body, it becomes much harder to treat and can be life‑threatening.
How Melanoma Develops
Growth Patterns and Spread
Melanomas that become thicker infiltrate deeper layers of skin where blood vessels and lymphatic channels reside, allowing the cancer to spread more easily. As Krista Rubin, a melanoma nurse at Mass General Brigham, explains, the deeper the tumor reaches, the greater the chance it will travel through these channels.
Recognizing the Signs
Persistent Skin Changes
Symptoms such as a spot that itches, bleeds, or remains irritated for more than two weeks deserve attention. Unlike typical skin injuries, which usually resolve quickly, melanoma‑related signs often persist.
Asymptomatic Presentation
In some cases, melanoma does not cause any noticeable irritation or visible blemish, making it easy to overlook. A seemingly ordinary mole or patch of skin may actually be an early melanoma.
Survival Depends on Stage
Stage Four Prognosis
Survival rates decline sharply when melanoma reaches advanced stages. For stage four disease, the five‑year survival range is reported between 16 % and 32 %, underscoring the critical importance of prevention and early detection.
