Skin Cancer spread

Skin cancer is the most common of all cancers. It's highly curable when detected early. Most skin cancers are classified as nonmelanoma, meaning they arise from cells in the skin other than pigment-producing cells called melanocytes. Nonmelanoma cancer isn't likely to spread and it's easily removed.

Melanoma begins in the melanocytes, cells that produce skin color — or melanin. Melanin helps protect deep layers of skin from harmful effects of the sun. A suntan is produced by melanin trying to protect your skin by blocking harmful ultraviolet light, but protection only goes so far. While melanoma accounts for a small percentage of skin cancer, it causes the majority of skin cancer deaths.

Melanoma typically begins as a mole. If you catch it early and it hasn't spread, it can be surgically treated. Here you see the mole being removed, along with surrounding skin. The extra skin is taken to ensure that no cancer cells are left behind.

Melanoma is dangerous because it can spread beyond what you can see, moving deep into your skin where it can gain access to your lymphatic vessels. This allows cancer cells to travel to distant locations in your body. Cancer cells can also travel to different parts of your body by way of your blood vessels.

In this example, melanoma cells migrate to a lymph node. From the lymph node, the melanoma cells can then travel to other parts of your body. Here, you see cancer spreading to the lung.

You don't need to hide indoors to protect your skin from cancer. Wear sunscreen and sun protective clothing and be sure to do skin cancer self-checks. See your health care provider if you find anything suspicious.

Epidemiology of Skin Cancer

Skin cancer ---> Skin cancer Statistics

Skin Cancers are the most commonly diagnosed malignant tumors in the United States, with an incidence of approximately 1.4 million new cases annually. One in five Americans born in 2004 will be diagnosed with skin cancer in their lifetime. More than half of all cancers diagnosed in the United States are skin cancers. The most common skin cancer types are basal and squamous cell carcinoma (BCC and SCC). Melanoma accounts for 4% of skin cancer diagnoses but accounts for 75% of skin cancer deaths, with 7,910 deaths due to melanoma in 2004, or about one every hour. Approximately 95,880 new cases of melanoma will be diagnosed in the United States in 2004: 40,780 in situ and 55,100 invasive (29,900 men and 25,200 women). This represents a 4% increase in new cases of melanoma from 2003. The incidence of melanoma has more than tripled among Caucasians between 1980 and 2003. Invasive melanoma is the fifth most common cancer in men, seventh most common cancer in women, and the most common form of cancer of any type in women between 25 and 29 years of age. The early diagnosis and surgical treatment of these skin cancers can be curative.