<unk>  <unk>  is a technique used to combat the occurrence of metastasis to the brain in highly aggressive cancers that commonly metastasize to brain, most notably small-cell lung cancer. Radiation therapy is commonly used to treat known tumor occurrence in the brain, either with highly precise stereotactic radiation or therapeutic<unk><unk> . By contrast,<unk>  is intended as preemptive treatment in patients with no known current intracranial tumor, but with high likelihood for harboring occult microscopic disease and eventual occurrence. For small-cell lung cancer with limited and select cases of extensive disease,<unk>  has shown to reduce recurrence of brain metastases and improve overall survival in complete remission. __TOC__
Prophylactic cranial irradiation
Stereotactic radiation therapy
Radiation therapy
Growth hormone therapy
Whole brain radiotherapy
Hormone replacement therapy
Vascular access for chemotherapy
Estrogen deprivation therapy