Cancer-Related Resources Informative and helpful resources on other Web sites for cancer patients and their caregivers 
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In the United States, cancer in the liver is most commonly the result of spread, or metastasis, from cancer in other parts of the body. Cancerous cells may detach from the site of the original cancer and be transported via the bloodstream to the liver, a blood-straining organ. Because one of the liver's main functions is to filter blood, cancer cells from other parts of the body can become lodged in the liver and grow into tumors. Most metastatic liver cancers are the result of colon cancer that has spread to the liver.
Metastatic liver cancer is also known as secondary liver cancer. This type of cancer may spread rapidly and aggressively, or develop years after treatment of the original tumor.
