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Cancer encyclopedia --collections of anti-cancer and anti-carcinogenic agents, chemicals, drugs and s - Cancer - Wikipedia



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Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. [2] [8] These contrast with benign tumors , which do not spread to other parts of the body. [8] Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss , and a change in bowel movements . [1] While these symptoms may indicate cancer, they may have other causes. [1] Over 100 types of cancers affect humans. [8]

Cancers are a large family of diseases that involve abnormal cell growth with the potential to invade or spread to other parts of the body. [2] [8] They form a subset of neoplasms . A neoplasm or tumor is a group of cells that have undergone unregulated growth and will often form a mass or lump, but may be distributed diffusely. [24] [25]

All tumor cells show the six hallmarks of cancer . These characteristics are required to produce a malignant tumor. They include: [26]

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