Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show bibasilar lower lobe opacities . The cardiomediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . Note is made of near complete lucency of the mid right clavicle .
    OUTPUT:
    
Bibasilar opacities likely represent atelectasis although pneumonia can not be excluded . Lucency of the medial clavicle is unchanged , likely represents myelomatous involvement .