Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are mildly overinflated . Lungs are clear . Pulmonary vasculature is normal . Mediastinal and hilar contours are normal . Bilateral apical pleural thickening is unchanged . There is no pleural effusion .
    OUTPUT:
    
No acute intrathoracic process .