Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate low lung volumes with subsequent crowding of bronchovascular structures . There is obscuration of the right hemidiaphragm medially which corresponds to area of opacification within the right lower lobe and retrocardiac area on lateral views . There is no pleural effusion or pneumothorax identified . His structures demonstrates no acute abnormality .
    OUTPUT:
    
Low lung volumes . Opacification within the right lower lobe for which an infection can not be excluded .