Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no pleural effusion , pneumothorax or focal airspace consolidation . Heart size is top normal . There is no pulmonary edema . The mediastinal and hilar structures are unremarkable . Incidental note is made of symmetric , biapical pleural thickening . There are mild degenerative changes of the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .