I have a question that I know has no exact answer, but I am hoping to get some input anyway. My daughter is 13 and was diagnosed with cf last year. The only symptoms she has are all digestive related and occasionally a sinus related problem. She hasn't been "sick" since her diagnosis with the exception of needing a bowel clean out. How long can a cf patient go before having pulmonary problems? I know that people with milder cf sometimes develop symptoms later in life, but is it inevitable that pulmonary problems are coming, or could her cf always manifest as GI problems without pulmonary problems?