Unexpected long survival of brain oligometastatic non-small cell lung cancer (NSCLC) treated with multimodal treatment: a single-center experience and review of the literature

Non-small cell lung cancer (NSCLC) is the leading cause of cancer-related death across the world (1). Over 50% of these patients present metastatic disease at diagnosis, while many others develop metastatic dissemination during their course of disease and about 20% of these patients develop brain metastases