A metastatic brain tumor is cancer that started in another part
of the body and spread to the brain. Brain tumor - metastatic
(secondary); Cancer - brain tumor (metastatic) Many tumor or
cancer types can spread to the brain, the most common being lung
cancer, breast cancer, melanoma, kidney cancer, bladder cancer,
certain sarcomas, and testicular and germ cell tumors. Some
types of cancers only spread to the brain infrequently, such as
colon cancer, or very rarely, such as prostate cancer. Growing
brain tumors may place pressure on nearby parts of the brain.
Brain swelling due to these tumors also causes increased
pressure within the skull. Metastatic brain tumors are
classified depending on the exact site of the tumor within the
brain, type of tissue involved, original location of the tumor,
and other factors. Rarely, a tumor can spread to the brain, yet
the original site or location of the tumor is unknown. This is
called cancer of unknown primary (CUP) origin. Metastatic brain
tumors occur in about one-fou