When prostateThe prostate is a walnut-sized gland located between the bla... Full Definition cancerCancer is a group of diseases where cells grow abnormally an... Full Definition grows and spreads beyond the prostate, it is called metastasisThe development of a secondary growth away from the primary ... Full Definition. If a physician suspects a patient’s cancer has metastasizedSpread to other sites in the body via metastasis., they will perform a series of tests to determine the extent of the cancer and where it has spread.