Definition

Metastasis is the movement or spreading of cancer cells from one organ or tissue to another. Cancer cells usually spread through the blood or the lymph system.

If a cancer spreads, it is said to have "metastasized."

Alternative Names

Metastatic cancer; Cancer metastases

Information

Whether or not cancer cells spread to other parts of the body depends on many things, including:

• The type of cancer
• The stage of the cancer
• Original location of the cancer
• Your body's natural defenses, such as the immune system

Treatment depends on the type of cancer and where it has spread.

References

Doroshow JH. Approach to the patient with cancer. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 169.

Krasnick BA, Goedegebuure SP, Fields R. Tumor biology and tumor markers. In: Townsend CM Jr, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 21st ed. St Louis, MO: Elsevier; 2022:chap 28.

Rankin EB, Giaccia AJ. Cellular microenvironment and metastases. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6th ed. Philadelphia, PA: Elsevier; 2020:chap 3.