context: Metastasis, a metastasis, is a colony of cancer cells that has spread to the body outside the main tumor of the cancer. Metastases can occur in almost all organs, but the most common sites are the liver, lungs and brain. Metastases form when cancer cells invade the primary tumor into the lymphatic or bloodstream and thereby pass into other organs, where disturbed cell growth can continue. Cancers may have a tendency to send metastases to a specific location: for example, prostate cancer often sends metastases to the bones and colon cancer to the liver.
question: How is the metastasis of cancer formed?
answers.text: when cancer cells invade the primary tumor into the lymphatic or bloodstream and thereby pass into other organs, where disturbed cell growth can continue