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Cancer Essay

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Cancer is one of the most common life-threatening diseases of the modern world, according to the research, there was around 12.7 million people were diagnosed with cancer in 2008, and around13% of all deaths. In this essay, a discussion of the introduction of cancer disease, which is followed by an analysis of the treatment usage and the effectiveness of targeted therapy and subsequently compare targeted therapy and the other cancer treatment resolution.

Cancer is a big class of disease causes the abnormal cell growth uncontrollably and spread through the body. There are over 100 different types of cancer, and each is classified by the type of cell that is initially affected. The tumors usually classified into two main groups, they are solid tumors (in organ of body) and liquid tumors (in the circulatory and lymphatic system). The cause of cancer is usually due to carcinogens which is widespread in the environment, If the cell is belong to cancerous tumor-malignant, it invades other organ or spread systems and life threatening. The cancer usually progress through 4 stages, the signs and symptoms will depend on the position, size and numbers of the cancer cells, also different in several stages. If the tumor is close to the body surface, you might see a lump or ...

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