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Cancer is a group of diseases characterized by the uncontrolled growth and spread of abnormal cells in the body. Normally, cells in the body divide and grow in a controlled manner, with old or damaged cells being replaced by new ones. However, in cancer, this process is disrupted, and cells begin to grow and divide uncontrollably, forming a mass of cells called a tumor. Not all tumors are cancerous, however. Benign tumors do not spread to other parts of the body and are usually not life-threatening. Malignant tumors, on the other hand, can invade nearby tissues and organs and spread to …