Week 5 Assignment 1 Sci162

Week 5 Assignment 1 Sci162 - Melanoma is the most dangerous...

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“Melanoma is the most dangerous type of skin cancer, and it is the leading cause of death from skin disease.” Changes in cells called melanocytes are what cause melanoma. Melanocytes are cells located at the bottom of the skin's epidermis that are responsible primarily for the color of skin. Melanocytes are so close to the surface of the skin so they are vulnerable to ultra violet rays. The four major types of melanoma are: superficial spreading melanoma, nodular melanoma, lentigo maligna melanoma, and acral lentiginous melanoma. Superficial spreading melanoma is often the most common form of melanoma in Caucasians. It is usually diagnosed at the age of 50, and it occurs on sun exposed skin. The disease appears on the lower limbs of females and on the backs of males. Nodular melanoma is often the most aggressive form of melanoma. It grows very quickly in depth than width. It takes longer for a person to notice any changes because; it can appear in a place where a lesion did not previously exist. Nodular
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Week 5 Assignment 1 Sci162 - Melanoma is the most dangerous...

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