A new nomogram and risk classification system for predicting survival in small cell lung cancer patients diagnosed with brain metastasis: A large population-based study

The prognosis of patients with small cell lung cancer (SCLC) is poor, most of them are in the extensive stage at the time of diagnosis, and are prone to brain metastasis. In this study, we established a nomogram combined with some clinical parameters to predict the survival of SCLC patients with brain metastasis.