My child has had increased central interstitial markings on 3 x-rays over the past 6 months? is it all just reactive airway or could it be cardiac ?

Discuss with Ur doc: Increased interstitial markings are a non-specific finding.They can be caused simply by a kid not taking a deep enough breath to match the standard film.They can represent minor changes in a respiratory infection or asthma.There must have been a reason to get the films in the first place.I would ask the kids doc what they think of the pattern & go from there. Its easy to worry when no one explains