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  1. Cancer - Wikipedia

    Cancer is a group of diseases involving uncontrolled cell growth typically resulting in tumors with the potential to invade or spread to other parts of the body. [2][8] These malignant tumors contrast with …

  2. What Is Cancer? - NCI

    Oct 11, 2021 · Explanations about what cancer is, how cancer cells differ from normal cells, and genetic changes that cause cancer to grow and spread.

  3. Cancer - World Health Organization (WHO)

    Apr 16, 2026 · WHO fact sheet on cancer providing information on the health burden of different types of cancer, causes, risk factors, prevention, early diagnosis, treatment, palliative care, and WHO's work …

  4. What Is Cancer? Symptoms, Causes & Types - Cleveland Clinic

    Aug 19, 2024 · Cancer can start almost anywhere, including your skin, muscle, organs, bones and blood. Find out how early treatment gives you the best outlook.

  5. All About Cancer - American Cancer Society

    Learn about cancer at the American Cancer Society. Find information for specific cancer types: breast, colon, lung, prostate, skin, and more.

  6. Cancer - Symptoms and causes - Mayo Clinic

    Nov 19, 2024 · Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.

  7. Cancer | Definition, Causes, Types, & Treatment | Britannica

    Jun 18, 2026 · Cancer is a disease characterized by the uncontrolled multiplication of abnormal cells in the body. There are numerous types of cancers, with certain types being major causes of sickness …

  8. A to Z List of Cancer Types - NCI

    Alphabetical list of all cancers, with links to disease-specific and general information about treatment, coping, screening, prevention, clinical trials, and other topics.

  9. End Cancer As We Know It | American Cancer Society

    Every cancer. Every life. We are a leading cancer-fighting organization with a vision to end cancer as we know it, for everyone. We are improving the lives of people with cancer and their families as the only …

  10. Cancer: Symptoms, Causes, Treatment, Stages, Prevention

    Read about cancer symptoms, causes, treatment, stages, prognosis, diagnosis, types, and prevention. Learn what cancer is and what causes it. Inform yourself about the role viruses play in contributing to …