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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 …

  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 …

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

    What is cancer? Cancer is a large group of diseases with one thing in common: They happen when normal cells become cancerous …

  4. 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 …

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

    Aug 5, 2026 · Cancer is a disease characterized by the uncontrolled multiplication of abnormal cells in the body. There are numerous …

  6. 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, …

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

    Read about cancer symptoms, causes, treatment, stages, prognosis, diagnosis, types, and prevention. Learn what cancer is and …

  8. Cancer: Types, Causes, Treatment, and Prevention - Healthline

    Jan 17, 2023 · Cancer is a group of diseases that occur when abnormal cells divide rapidly and spread. Learn the types, causes, …

  9. 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, …

  10. Cancer - World Health Organization (WHO)

    Jul 14, 2026 · Cancer is the second leading cause of death globally, accounting for an estimated 9.6 million deaths, or 1 in 6 deaths, …