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The primary cause of skin cancer is prolonged exposure to ultraviolet (UV) radiation from the sun or tanning devices. Skin cancer is the most commonly diagnosed form of cancer in humans. [11] [12] [13] There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC) and melanoma. [1]
SGc originates from sebaceous glands in the skin and, therefore, may originate anywhere in the body where these glands are found. SGc can be divided into 2 types: periocular and extraocular. The periocular region is rich in sebaceous glands making it a common site of origin. [3] [4] The cause of these lesions in the vast majority of cases is ...
Melanoma is the most dangerous type of skin cancer. [2] Globally, in 2012, it newly occurred in 232,000 people. [2] In 2015, 3.1 million people had active disease, which resulted in 59,800 deaths. [5] [6] Australia and New Zealand have the highest rates of melanoma in the world. [2]
It’s usually clustered around the insides of elbows and knees, but can appear anywhere on the skin. Other symptoms to note : Eczema is usually itchy and most common in young people, although ...
This skin cancer tends to grow slowly and isn’t life-threatening for most people, but it needs to be treated before it can grow deep and injure nerves and blood vessels, the AAD noted.
Excessive unprotected exposure to the sun's ultraviolet (UV) rays can cause skin damage, eye damage, immune suppression, and skin cancer. Even people in their 20s can develop skin cancer.
In Canada, the most common skin cancer is basal-cell carcinoma (as much as one third of all cancer diagnoses), affecting 1 in 7 individuals over a lifetime. [66] This tumor accounts for approximately 70% of non-melanoma skin cancers. In 80 percent of all cases, basal-cell carcinoma affects head or neck skin. [65]
Cutaneous squamous-cell carcinoma (cSCC), also known as squamous-cell carcinoma of the skin or squamous-cell skin cancer, is one of the three principal types of skin cancer, alongside basal-cell carcinoma and melanoma. [10] cSCC typically presents as a hard lump with a scaly surface, though it may also present as an ulcer. [1]