Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , which accentuate bronchovascular markings . The left hemidiaphragm is elevated and obscured . A small left pleural effusion is likely . There is no right pleural effusion . No pneumothorax . Bibasilar opacities are noted . There is no pulmonary edema . Heart is normal in size . The descending aorta is tortuous . Aortic arch calcifications are noted .
    OUTPUT:
    
Left hemidiaphragm is elevated and obscured . Bibasilar opacities , likely atelectasis or infection in appropriate clinical setting .