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Cancer Warrior
How Cancer Grows
8. Angiogenesis
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Often during the development of earlier stages of the tumor, or perhaps by the time the tumor has broken through the basement membrane (as pictured above), angiogenesis takes place. Angiogenesis is the recruitment of blood vessels from the network of neighboring vessels. (A similar growth of lymph vessels may also take place.)

Without blood and the nutrients it carries, a tumor would be unable to continue growing. With the new blood supply, however, the growth of the tumor accelerates; it soon contains one billion cells and, now the size of a small grape, is large enough to be detected as a lump.

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1. DNA of a normal cell | 2. Mutation of DNA | 3. Genetically altered cell | 4. Spread and second mutation | 5. Third mutation | 6. Fourth mutation | 7. Breaking through the membrane | 8. Angiogenesis | 9. Invasion and dispersal | 10. Tumor cells travel | 11. Metastasis

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