PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No chemotherapy during and for 2 weeks after gadolinium texaphyrin therapy Endocrine therapy: Concurrent hormonal therapy allowed Radiotherapy: No prior cranial radiation, including prior stereotactic radiosurgery No plan for radiosurgery or radiation boost following whole brain radiotherapy Concurrent radiotherapy allowed to other sites, except kidneys and liver Surgery: No prior subtotal or total resection of brain metastases (except biopsies)