What is a tumor?

The tumor is developing in the human body of or mature of normal cell, at under the long-term function of some and bad factor, a certain cells, appear excessively to increase to living or unusually divide but born new-born thing, form a lump in the part.But it is as different from the cell as normal organization, not according to the metabolism regulation growth of normal cell, but become to be free from stipulation and control, caused cell's presenting excrescent appearance, function and metabolism, with the result that the structure that can break normal organization organ and influence its function.The malignant tumor cell returns an ability to surroundings gradually spread, even proliferation transfer other organ organizations, continue double to living, result in to the human body or the life tremendous threat.
Human body in the process of growing although often have lump formation, the lump is different to choose site for capital is a tumor.Therefore, have to discriminate the property of lump, then can attain exactitude diagnosis, exactitude treatment.