The treatment of brain metastasis is generally palliative since most patients have uncontrollable systemic cancer. Historically, whole brain radiation therapy (WBRT) has been the treatment of choice, although more recently focused radiation therapy e.g. stereotactic radiosurgery (SRS) has developed a role in selected patients. In certain circumstances, such as single brain metastasis, death may be more likely from brain involvement than systemic disease. In this group surgical resection has been proposed to relieve symptoms and prolong survival.