Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are relatively low lung volumes , which accentuate the bronchovascular markings . Given this , there are subtle bibasilar opacities which may relate to vascular crowding , however , underlying infection can not be excluded in the appropriate clinical setting . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
relatively low lung volumes , which accentuate the bronchovascular markings . Given this , subtle bibasilar opacities may relate to vascular crowding , however , underlying infection can not be excluded in the appropriate clinical setting . If clinical concern persists , suggest dedicated PA and lateral views when patient able .