Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable chest radiograph . Exam is limated by portable technique , low lung volumes and body habitus . There is apparent elevation of the left hemidiaphragm . Bibasilar opacities may be due to atelectasis and overlying soft tissues with small efusions not excluded . The cardiomediastinal silhouette is prominent but likely accentuated for reason above . Old , potentially post traumatic changes seen at the lateral right clavicle .
    OUTPUT:
    
Low lung volumes and probable bibasilar atelectasis , small effusions are possible . Two view may offer additional detail if patient is amenable .