Most lung cancer statistics include both small cell and non-small cell lung cancers. In general, small cell lung cancer accounts for about 10% to 15% of all lung cancers.Lung cancer (both small cell and non-small cell) is the second most common cancer in both men and women (not counting skin cancer).ost lung cancer statistics include both small cell and non-small cell lung cancers. In general, small cell lung cancer accounts for about 10% to 15% of all lung cancers.