Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is a vague opacity projecting over the anterior right 3rd rib on the frontal view which is seen overlying the spine on the lateral view . Elsewhere , the lungs are clear . Blunting of the posterior costophrenic angles may represent trace effusions . Cardiac silhouette is mildly enlarged . No acute osseous abnormalities identified .
    OUTPUT:
    
Vague opacity in in the posterior segment of the right upper lobe which could represent pneumonia in the proper clinical setting . In absence of appropriate history , CT scan is suggested . Otherwise , repeat after treatment is suggested to document resolution .