This slide shows a tumor metastasizing, or breaking up and traveling to different parts of the body .

1. Metastasis occurs when tumor cells break off and travel into the lymphatic system or the circulatory system.Metastasis occurs when tumor cells break off and travel into the lymphatic system or the circulatory system.

2. Two of every five cancers are skin cancers. The epidermis has two layers, the squamous cells, which comprise most of the epidermis, and basal cells, which are at the base of the epidermis.Two of every five cancers are skin cancers. The epidermis has two layers, the squamous cells, which comprise most of the epidermis, and basal cells, which are at the base of the epidermis.

6. Basal cell carcinoma is the second most common form of skin cancer, but is the most common in people with darker skin. It can spread, but does so infrequently. Basal cell carcinoma is the second most common form of skin cancer, but is the most common in people with darker skin. It can spread, but does so infrequently.

8. Melanomas are so dangerous because they tend to metastasize quickly. Treatments include surgery in combination with chemotherapy and possibly radiation. Chemotherapy is a chemical poison that targets rapidly dividing cells, while radiation is used to shrink the tumor. Besides making the tumor go away, it can also reduce pain from the swelling of the surrounding tissues. Melanomas usually start from within existing moles.Melanomas are so dangerous because they tend to metastasize quickly. Treatments include surgery in combination with chemotherapy and possibly radiation. Chemotherapy is a chemical poison that targets rapidly dividing cells, while radiation is used to shrink the tumor. Besides making the tumor go away, it can also reduce pain from the swelling of the surrounding tissues. Melanomas usually start from within existing moles.

9. The ABCD Rule of Melanoma A = Asymetry � one half of the mole does not match the other B = Border Irregularity � the edges of the mole are uneven, notched or blurred C = Color � the pigment is not even. Cancerous moles may have several colors in one mole (blue, red, brown or black) D = diameter - watch moles the size of a pencil eraser or larger for changes. Encourage students not to panic if a mole they currently have has several colors. Some non-cancerous moles do have more than one color. But also encourage them to have suspicious ones checked by a family physician or dermatologist. Encourage students not to panic if a mole they currently have has several colors. Some non-cancerous moles do have more than one color. But also encourage them to have suspicious ones checked by a family physician or dermatologist.

25. After her surgical site heals, the woman will be fitted with a prosthetic nose.After her surgical site heals, the woman will be fitted with a prosthetic nose.

26. The increase has been attributed to ozone depletion in the environment and the increase of people spending recreational time in the sun. Females who wear bikinis have a 13% higher risk of melanoma development than females who wear one-piece suits.The increase has been attributed to ozone depletion in the environment and the increase of people spending recreational time in the sun. Females who wear bikinis have a 13% higher risk of melanoma development than females who wear one-piece suits.

27. People living in the high intensity range have a much greater chance of developing skin cancers. Australia has the highest occurrence of melanoma in the world, with 2 of 3 people developing melanoma. One of seven Americans will develop skin cancer. People living in the high intensity range have a much greater chance of developing skin cancers. Australia has the highest occurrence of melanoma in the world, with 2 of 3 people developing melanoma. One of seven Americans will develop skin cancer.

31. These tests show several things: Skin exposed to both acute doses and chronic low doses of skin both show this decrease in cells Cells treated with UV radiation have lowered ability to reduce rejection of cancer tumors. Fewer Langerhans cells and an exposure to UV light causes these cells to cease production of antigens for T-lymphocytes. Skin pigmentation does not protect against alterations in immune system defenses once the skin was exposed to UV radiation.These tests show several things: Skin exposed to both acute doses and chronic low doses of skin both show this decrease in cells Cells treated with UV radiation have lowered ability to reduce rejection of cancer tumors. Fewer Langerhans cells and an exposure to UV light causes these cells to cease production of antigens for T-lymphocytes. Skin pigmentation does not protect against alterations in immune system defenses once the skin was exposed to UV radiation.