Hi Martha,
Welcome to the boards. Im sorry its under these circumstances.You will find alot of people here that are very helpful and understanding.
I dont believe that there are stages of small cell. Its either limited or extensive. Limited I believe is confined to the lung. Extensive has spread to other places outside the lung.My mom had extensive sclc. Her cancer went into remission after the chemo, but hers came back in the brain. As far as what to expect I cant tell you in his particular case, but its like a rollercoaster ride. There are so many ups and downs. When he was first diagnosed, Im sure you were so down and then remission-- so up and now thats its back---down again. See what I mean? I know its not fair is it?
Can you go to the doctors with him and ask some questions? If you cant, he can let them know that his daughter has some questions, and she will be calling. He can tell them that its ok to speak with you concerning his medical info.
Keeping you and your dad in my prayers