Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacity in the right middle lobe is most suggestive of atelectasis versus scarring . There is also vague opacity some with a linear pleural - based component at the right lung apex laterally . Lungs are otherwise clear without pneumothorax or effusion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities identified .
    OUTPUT:
    
No definite acute cardiopulmonary process . Vague right apical opacity with a linear pleural - based component . If no priors available for comparison from another institution to document stability , nonurgent outpatient chest CT suggested to further characterize in this patient with a smoking history .