Final answer:
Metastasis is the process by which cancer cells spread from a primary tumor to other parts of the body. The spread of cancer cells to the liver from a remote site is called liver metastasis.
Step-by-step explanation:
The spread of cancer cells to the liver from a remote site is called metastasis. Metastasis is the process by which cancer cells break away from the primary tumor, travel through the bloodstream or lymphatic system, and establish new tumors in different parts of the body. In the case of liver metastasis, cancer cells from other organs, such as the gastrointestinal tract or lungs, spread to the liver and form secondary tumors.