Skin cancer is a malignancy of cells that develop in the skin tissue. These cells will continue to divide uncontrollably in the skin tissue. Consequently, when cells are supposed to die, cancer cells do not die, causing buildup on the cell network. After damaging the surrounding tissue, abnormal cancer cells will continue to divide the nearest cell tissues. Only by strengthening the cells or tissues that have not been contracted to stop the spread of these abnormal cells. Skin cancer is usually characterized by patches of skin that are not symmetrical and has a significant shades.
Causes of skin cancer.In the United States the most common skin cancer attacks men and women and has reached epidemic proportions over the past few years. Causes of skin cancer twofold cause from within the body or outside the body. The causes of the outside of the body in the form of chemicals, sunlight and viruses. More recently discovered viruses that can cause skin cancer. Among them is the human papilloma virus (HPV) and human immunodeficiency virus (HIV). Factor in the cause of the body's own genetic material (genes). And endurance is also a factor that can cause cancer.
The study found that some chemicals can cause skin cancer. Of which is coal, arsenic, nitrogen and others. Other studies have claimed, that the sun is the main factor that causes skin cancer. Part sun is suspected carcinogenesis ultraviolet B (UVB). Ozone layer above the earth, is considered a barrier UVB rays reach the earth. With the increased use of certain chemicals, the ozone layer will cause the rupture, causing UVB rays directly on the earth. This will increase the incidence of skin cancer. Besides the sunlight, ionizing rays used for treatment (radiation / radiotherapy) can also cause skin cancer.
Pathophysiology of Skin CancerSkin cancer begins with benign and malignant tumors (cancer). Among them there is the state of precancerous skin lesions that can become malignant or cancerous skin. For example, arsenic or redness due to sun exposure, some kind of bumps that grow slowly, skin diseases due to radiation, some types of moles, whitish patches in the mouth or tongue and genitals, large moles that are present at birth and others. In addition, there is also a condition called genodermatosis, which is a skin disease caused by gene abnormalities associated with malignancy. Examples of disease xeroderma pigmentosum.
Types of skin cancerSkin cancer has several types, namely:
- Basal Cell Carcinoma
- Karisnoma Cell Carcinoma
- Malignant Melanoma