Metastatic brain tumor is a tumor that develops by the transfer of a tumor in another part of the body to the brain through the blood circulation. In fact, metastatic brain tumors are four times more common than all other brain tumors. Brain metastasis may occur in 20% to 40% of patients treated for lung, breast, large intestine, stomach, skin, or prostate cancers. In some patients, even more than one metastatic tumor may be detected in the brain.
It is also known that most brain metastases can occur in the brain, before the actual tumor is detected in the body. Even in some patients, when metastasis is found in the brain, no other tumor can be found in any other organ.
As with all the brain tumors, the treatment of metastases is surgery. The prognosis depends upon various factors such as the origin organ of the tumor, the number of organs with tumor spread, the number of metastatic tumors in the brain, the age of the patient, and the presence of other diseases.