Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . There is atelectasis at the left lung base which likely also is associated with small effusion as seen on prior CT - PET . Coarsened reticular nodular markings within the lungs likely represent chronic change . No pneumothorax is seen . The cardiomediastinal silhouette is stable . No free air below the right hemidiaphragm .
    OUTPUT:
    
Coarsened markings likely reflect chronic disease with left basal atelectasis and small effusion again noted .