Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . As seen previously , plate - like atelectasis is noted in the left lower lung . There is no focal consolidation , effusion , or pneumothorax . Areas of linear scarring are noted in the upper lungs bilaterally . Cardiomediastinal silhouette is stable and normal . Bony structures are intact . No free air below the right hemidiaphragm . Degenerative changes are noted in the upper lumbar spine seen on lateral view .
    OUTPUT:
    
Plate - like atelectasis with linear scarring in the upper lungs . No signs of pneumonia or CHF .