American Association for Cancer Research


angiogenesis: Blood vessel formation. Angiogenesis that occurs in cancer is the growth of blood vessels from surrounding tissue to a solid tumor. Angiogenesis is necessary for a tumor to grow larger and for metastases to grow at secondary sites. It is stimulated by growth factors such as VEGF (vascular endothelial growth factor).

For more glossary words, visit the Glossary of Cancer Terms.