Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Breast Cancer ?
    ### Response:
    One definition of cure is being alive and free of breast cancer for 5 years. If the cancer is found early, a woman's chances of survival are better. In fact, nearly 98 percent of women who discover their breast cancer when it is near the site of origin and still small in size are alive 5 years later.
    