my husband was diagnosed with 2to 3 or 3 to 4 stage lung cancer . it is non-small celled and we can't get a straight answer from the doctors on what stage it is and they can't come to a agreement on what stage it is. from stage 2 to stage 4 what is the average time would he have. i am looking for help. he has the best doctors from the cleveland clinic but i wish they could come together on the stages.