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 . There are bibasilar opacities , which project over spine on the lateral view . Hilar and mediastinal silhouettes are unremarkable . There is pulmonary vascular congestion . Heart size is top normal . No pleural effusion . The biliary drains are in place .
    OUTPUT:
    
Bibasilar opacities may represent atelectasis or infection in the appropriate clinical setting . Pulmonary vascular congestion .