ocr: Study Favorable Prognostic Factors Gelber et al60 Ambulatory breast cancer patient with no soft tissue metastases Ambulatory lung cancer patient with absent primary or no extracranial metastases Diener-West et al61 Karnofsky Performance Status >70 Absent controlled primary tumor Age <60 y Metastatic spread limited to the brain Swift et al89 <4 lesions on the initial brain CT scan Harwood et al90 Breast rather than lung primary Good performance status