Hi! My 6 year old daughter had a bronchoscopy done and the pulmonologist said he found viscous mucous in the bronchus. Is this CF?

Viscous mucus. Patients with cystic fibrosis produce thick mucus, they have so many signs & symptoms, but if you are worried about it & his doctor is considering this possibility, he can be tested for it with a sweat chloride test. Good luck. .