Cancer is a group of diseases characterized by the uncontrolled growth and spread of abnormal cells in the body. These cells divide and multiply rapidly, forming malignant tumors that can invade nearby tissues and spread to other parts of the body through the bloodstream or lymphatic system. Cancer can affect any part of the body and has many different forms, depending on the type of cell it originates from. According to the National Cancer Institute [https://www.cancer.gov/about-cancer/understanding/what-is-cancer], there are over 100 different types of cancer.
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