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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. 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.

  5. 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.

  6. 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 …

  7. 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.

  8. Comprehensive Cancer Information - NCI

    Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.

  9. 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, treatments, and prevention.

  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 …

  11. Cancer - NHS

    Find out more about cancer, including the possible symptoms, types of cancer, common treatments, causes and ways to reduce your risk, as well as information on waiting times for diagnosis and …