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What Is Cancer? - NCI
Explanations about what cancer is, how cancer cells differ from normal cells, and genetic changes that cause cancer to grow and spread.
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 benign tumors, which do not spread. [8] Over 100 types of cancers affect humans. [8][9] About 33% of deaths from cancer are caused by tobacco and alcohol, obesity, lack of fruit and ...
Cancer - World Health Organization (WHO)
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 in this area.
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 cells that multiply and spread. Your genes send instructions to your cells — like when to start and stop growing, for example. Normal cells follow these instructions, but cancer cells ignore them.
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.
Cancer - Symptoms and causes - Mayo Clinic
Find out the basics about cancer, including symptoms, causes and treatments. Learn steps you can take to prevent cancer.
Cancer | Definition, Causes, Types, & Treatment | Britannica
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 and death worldwide.
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 organization combating cancer through advocacy, research, and patient support, to ensure that everyone has an opportunity to prevent, detect, treat, and survive cancer.
15 Early Symptoms That Could Be a Sign of Cancer - Health
Early signs of cancer can include swelling in the neck and skin sores that will not heal. Other symptoms include unusual pain and ongoing itching.
Comprehensive Cancer Information - NCI
Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.
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