Fig. 3From: Oligo-recurrence predicts favorable prognosis of brain-only oligometastases in patients with non-small cell lung cancer treated with stereotactic radiosurgery or stereotactic radiotherapy: a multi-institutional study of 61 subjectsOverall survival (OS) stratified by RPA class. RPA is not a significant prognostic factor for brain metastases, despite its wide use for this purposeBack to article page