This is a non specific descriptive sentence based on a subjective assessment or impression. Often it does not correspond to any real abnormality. I myself do not use this in my reports. I prefer to give a precise description of the abnormality, which could be one of the following examples:
- Bronchial wall thickening seen in chronic asthma or in chronic bronchitis also known as chronic obstructive airways disease(in smokers).
-Dilatation of the arteries in heart failure, or rarely in shunts of the heart.
- Linear infiltrates in edema from heart failure.
- Illdefined infiltrates in bronchopneumonia(infection).
As you can deduce from the above, any of these findings should be correlated with the clinical symptoms of the patient to see if they fit.