Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest demonstrates low lung volumes , which accentuate bronchovascular markings . There is no pleural effusion , focal consolidation or pneumothorax . Bibasilar opacities likely represent atelectasis . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . Left internal jugular central venous catheter tip projects over left brachiocephalic vein , unchanged .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .