Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is mild diffuse increase in interstitial markings bilaterally , which may be due to chronic lung disease , no priors available for comparison . Atypical infection , thus , is not entirely excluded . No lobar consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable . There is minor right apical pleural thickening .
    OUTPUT:
    
Mild diffuse increase in interstitial markings bilaterally , which may be due to chronic lung disease . However , given lack of priors for comparison to assess for chronicity , an atypical infection is not excluded .