Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacities in the mid lungs are probably scarring and chronic atelectasis due to long - standing , restrictive pleural thickening . There is no pleural effusion or pneumothorax . Heart is normal size . Widening of the upper mediastinum and enlargement of the left hilus are long - standing due , respectively , to fat deposition and adenopathy , and adenopathy . Diagnosis for all of these chronic findings is uncertain .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Chronic restrictive pleural thickening bilaterally . 3 . Chronic central adenopathy .