Cancer and the Body

In: Science

Submitted By ncc1980
Words 1652
Pages 7
Cancer and the Body
Krystal Medley
Lincoln Technical Institute

Abstract
Cancer is one of the leading causes of death in the world today. Studies show that one in three people will suffer from some form of cancer in their lifetime. There are many different kinds of cancer that effect different parts of the body. Cancer is treated in various different ways. Some forms of cancer are curable and some are not, but with the continued research we can hope to someday find a cure.

Cancer and the Body
Cancer is a class of diseases characterized by out-of-control cell growth. There are over one hundred different types of cancer, and each is classified by the type of cell that is initially affected. Cancer harms the body when damaged cells divide non-stop to form lumps or masses of tissue called tumors. Tumors can grow and interfere with the digestive, nervous and circulatory systems. They can release hormones that alter bodily functions. Tumors that stay in one place and demonstrate limited growth are generally considered to be benign.
There are different diagnoses of cancer: oma, benign, malignant and metastasis. Metastasis is the process in which cancer spreads to distant sites of malignant cells called metastatic growths. The most common sites of metastasis are liver, brain, bone, and lungs. Once metastasis has occurred, cancer treatment is more difficult to treat and less likely to be curative.
Malignant transformation occurs when normal cells are exposed to substances called carcinogens that damage the cells’ DNA. The transformation occurs in four steps: initiation, promotion, progression and the latent period. Initiation is when DNA is exposed to a carcinogen that has irreversible changes in DNA, causing the cells to appear somewhat abnormal, but continue to function normally. Promotion, which is sufficient exposure to an agent, encourages or enhances cell…...

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