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A '''Tumor''' is an abnormal and functionless mass of [[tissue]] within a living body that is not inflammatory and arises from pre-existent tissue. This can either be a [[cancer]] or not.
A '''Tumor''' is an abnormal and functionless mass of [[tissue]] within a living body that is not inflammatory and arises from pre-existent tissue. This can either be benign (non-cancer) or malignant ([[cancer]]). Malignant tumors (cancer) are more invasive and can spread ([[metastasis|metastasize]]) to other parts of the body.
[[Category:Medicine]]
[[Category:Medicine]]