Unlike extensive-stage small cell lung cancer,<unk><unk>  small cell lung cancer is potentially curable. In<unk>  small cell lung cancer, the median overall survival time is approximately 12–16 months, with five year survival rate of approximately 26% and long-term survival rate of approximately 4–5%. According to multiple studies, common prognostic factors of<unk><unk>  small cell lung cancer lies in performance status, age, life expectancy, comorbidities, extent of disease and smoking. Continued cigarette smoking negatively impacts<unk><unk>  small cell lung cancer survival. All clinicians and care providers should strongly encourage smoking cessation at the diagnosis of<unk><unk>  small cell lung cancer. Comparing to continued smokers, patients who quit at or after diagnosis lower the risk of death by 45%.
Limited-stage small cell lung carcinoma
Minimally invasive adenocarcinoma of the lung
Salivary gland–like carcinoma of the lung
EML4-ALK positive lung cancer
Combined small-cell lung carcinoma
Atypical pulmonary carcinoid tumour
Epithelial-myoepithelial carcinoma of the lung
Large cell neuroendocrine carcinoma of the lung