Questions About Cancer? 1-800-4-CANCER

Understanding Cancer Series

  • Posted: 01/28/2005
  • Reviewed: 09/30/2009

Slide 8

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Invasion and Metastasis

Cancers are capable of spreading throughout the body by two mechanisms: invasion and metastasis. Invasion refers to the direct migration and penetration by cancer cells into neighboring tissues. Metastasis refers to the ability of cancer cells to penetrate into lymphatic and blood vessels, circulate through the bloodstream, and then invade normal tissues elsewhere in the body.

Invasion and Metastasis