Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse interstitial abnormalities and multifocal airspace opacities are longstanding and variable in severity , accompanied by chronic bilateral hilar enlargement . Findings are minimally improved as compared to the prior examination dated ___ , and are compatible with known interstitial lung disease . There may be new consolidation in the left lower lobe , and growth of an irregularly shaped 2 cm focal lesion in the right upper lobe . There is no pleural effusion and probably no pulmonary edema . Mild cardiomegaly is stable from the prior exam . The descending aorta is partially calcified and tortuous .
    OUTPUT:
    
1 . Possible left lower lobe pneumonia . 2 . Slight interval improvement in the patient 's baseline interstitial lung disease . Longterm variability suggest an element of exposure , such as acute and chronic hypersensitivity pneumonia . 3 . No evidence of acute congestive heart failure . 4 . Possible right upper lobe mass or focal infection .