Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded . A vague opacity in the right middle lobe is seen only on the frontal projection without correlate on the lateral projection . No focal consolidation , effusion , or pneumothorax present . The cardiac and mediastinal contours are normal .
    OUTPUT:
    
Vague right middle lobe opacity is not confirmed on two views and may due to technique . Correlate with symptoms and exam and consider follow up radiographs if warranted .