Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . Vague heterogeneous bilateral opacities are noted throughout each lung , which are superimposed on a small preexisting lung nodule , suggesting calcified granulomas . However , there may be additional nodules including a nodular focus measuring about 8 mm in diameter that projects over the left mid - to - upper lung .
    OUTPUT:
    
Vague but widespread parenchymal opacities , including at least a few possible nodules . If an etiology is suspected clinically , such as pulmonary edema or atypical pneumonia , then followup radiographs are suggested after treatment to show resolution of all opacities back to baseline . Otherwise , chest CT could be considered .