Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs appear clear . The cardiomediastinal silhouette , hilar contours , and pleural structures are normal . No pneumothorax or pleural effusion . No evidence of a focal apical lesion causing brachial plexopathy .
    OUTPUT:
    
No evidence of an apical lesion causing brachial plexopathy . No acute cardiopulmonary process .