The x-ray report probably said hyper-inflation. It means that the lungs appear to be overly expanded, something that can be an early sign of chronic obstructive pulmonary disease (COPD). It is a somewhat subjective interpretation by the radiologist and not a good way to make the diagnosis. Pulmonary function tests (PFTs) are a much better way and your results are not at all suggestive of COPD. The results do not show obstruction.
If anything the results are more consistent with restriction, or restrictive lung disease, a term that implies that one’s lungs are smaller than predicted. In this regard, your results are within normal limits, albeit at the lower range of normal values. Normal lung function is a wide range of values, rather than a normal value. The predicted value is the mean value of that range.
However, since the issue of restrictive lung disease has been raised and, especially if you have any respiratory symptoms, such as shortness of breath with exertion, you should consider discussing these findings with a lung specialist, also known as a pulmonologist.
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