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Skin cancer - Research Paper Example

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Your name Your The course Date Skin Cancer Introduction Among the most common cancers in the United States, is skin cancer (Woo and Eide). The important types of skin cancers include basal cell carcinoma, squamous cell carcinoma (Stulberg, Crandell and Fawcett), and melanoma (Woo and Eide)…
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Skin cancer
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Download file to see previous pages This increase has been linked to increasing solar radiation exposure associated with tanning behaviors. The use of artificial tanning beds has also been implicated. Skin cancers can present as any kind of skin lesion such as an ulcer or lump, and can therefore be mistaken by the patient as a benign process. This often leads to a delay in presentation until the cancer has reached an advanced stage. Considering the significance of skin cancer and the significant research interest surrounding the strength of association between light exposure and skin cancer, this literature review has been conducted to discuss what is known by the medical community today about skin cancers. Objectives The objectives of this review are to discuss the etiology, risk factors, diagnosis, and treatment of skin cancers. Discussion Epidemiology The incidence of skin cancers, both melanomas and non-melanomas, has risen over the past 3 decades. Some experts proclaim that we are experiencing a ‘record’ number of newly diagnosed skin cancers (Riker, Zea and Trinh). Melanoma is the 6th most common fatal malignancy in the United States (Riker, Zea and Trinh). The young women demographic group, in particular, has the highest increase in cancer incidence noted (Woo and Eide). Melanoma is the second most common cancer in women 20 to 29 year old (Riker, Zea and Trinh). Studies show no link between sex hormones and melanoma risk (Coelho and Hearing), and young women are the most common users of indoor tanning beds (Woo and Eide). Therefore, this high cancer rate in young women is likely a reflection of the contribution of tanning beds to skin cancer incidence. Skin melanoma is a rare cancer compared to basal and squamous cell skin cancers, however it is associated with a much higher rate of metastases and mortality, and occurs more commonly in whites than other races (Society). Risk factors and Pathophysiology The ultraviolet (UV) component of solar radiation has traditionally been considered an important ‘carcinogen’ for skin cancer. In the past few decades, the emergence of indoor tanning booths has emerged as another source of UV radiation exposure. Ultraviolet light has 3 components – UVA, UVB and UVC. UVB is the most strongly carcinogenic component, which also enhances vitamin D production in the skin (Coelho and Hearing). UVA is less carcinogenic, and UVC not at all. UV-induced DNA damage in keratinocytes can lead to pre-malignant changes in the skin such as actinic keratosis, solar lentigo, and dermatoheliosis. These lesions can, in time, develop into frank cancers (Stulberg, Crandell and Fawcett). The tanning industry, which is evidently responsible at least in part for the sharp rise in skin cancers, remains as a multi-billion dollar industry worldwide (Riker, Zea and Trinh). About 1 million American women use tanning beds regularly of which 70% are females between 16 to 45 years old. The number that uses excessive sun exposure for tanning is not known. Tanning beds were initially proclaimed to be non-carcinogenic as they emit mostly UVA. Also, the tanning UV exposure was considered beneficial for promoting vitamin D production in the skin. Eventually, however, studies demonstrated that tanning beds overall provided more UV radiation than the summer sun exposure. Fluorescent sunlamps were shown to provide up to 4 times as much UV radiation than ...Download file to see next pagesRead More
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