Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest frontal and lateral radiographs demonstrate unremarkable cardiomediastinal and hilar contours . Lungs are clear . No pleural effusion or pneumothorax evident . Minimal degenerative change at right acromioclavicular joint . No osseous abnormality is identified .
    OUTPUT:
    
No acute intrathoracic process . No overt evidence of PCP .