Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . There are diffuse increased interstitial markings bilaterally , with a reticular pattern of opacity more pronounced in the mid and low lungs bilaterally , but no focal opacity . Cardiac size is normal . The mediastinum appears widened secondary to unfolded aorta . There is no pleural effusion or pneumothorax . Bony structures are grossly intact .
    OUTPUT:
    
Findings compatible with interstitial pulmonary edema although atypical pneumonia can not be completely excluded . Correlate with subsequent chest CT .