More than 50%
Of sclc recurs, so i guess you would say it is "likely;" however, the proporion surviving beyond 2 years in limited disease has climbed from <5% to > 20% - perhaps as high as 25%.
In ed very few survive beyond 24months free of disease. Knowing 'rate of recurrence' doesn't help the person confronting th disease. In ld, there is a chance for cure. Go for it!