Small Cell Lung Cancer And Leg Pain Can Anyone Tell Me The Life Expectancy For Someone With Small Cell Lung Cancer Limited Stage 3rd Level?

Can anyone tell me the life expectancy for someone with small cell lung cancer limited stage 3rd level? - small cell lung cancer and leg pain

My mother was diagnosed with metastatic cancer, small cell lung cancer. She has undergone tests and treatments began this week with him. I know they will be limited in stage 3 and stage. Please, any information they could give him would be great to have seen some information but I hope, I think it looks better than I do. We have not yet achieved all that the results will again this Friday. But I thank you for all the help.