Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate nodular interstitial abnormality which is increased since ___ . The heart size is normal , there is no pleural effusion . There is biapical pleural thickening , and there is enlargement of the pulmonary hila . A ring opacity adjacent to the right hilum might represent a new nodule vs . a confluence of opacities .
    OUTPUT:
    
1 . Increased nodular interstitial abnormality , compatible with the reported history of Langerhans cell histiocytosis ; sarcoid or disseminated malignancy might also have this appearance and account for progressive nodulation . 2 . Opacity adjacent to right hilum , which should be further evaluated with dedicated chest CT on a non-emergent basis . Findings were discussed with Dr . ___ at 8 : 15 AM by phone .