Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart size and cardiomediastinal contours are normal . Pulmonary interstitial markings are mildly but diffusely increased . No focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
Mild generalized interstitial lung abnormality . Comparison with prior chest radiographs would allow assessment of chronicity . If none available , repeat radiographs after therapy is recommended . Findings were communicated via phone call by Dr . ___ to Dr . ___ ___ on ___ at ___ AM .