History of cancer Ch 1
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Definition

There is no easy definition of cancer.

We can define cancer as a pathological process during which some cells escape from the physiological control of differentiation and multiplication. These cells then acquire the capability of invading normal surrounding tissues, thus destroying them. Simultaneously or consequently, the cells migrate to various organs and constitute metastases.

The death of the tumor host occurs :

Natural history of cancer

The following description is a representation of the natural history of cancer (without treatment). In reality, every type of cancer (every cancer) probably has different initiation and promotion factors as well as progression history. However, this general diagram describes what cancer is..

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