Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views were obtained of the chest . The lungs are well expanded and clear without pleural effusion or pneumothorax . The heart is normal in size with normal mediastinal contours . No displaced rib fractures are identified . Right humeral postsurgical changes are better seen on the dedicated shoulder radiographs .
    OUTPUT:
    
No acute intrathoracic process .