Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low . Cardiomediastinal silhouette is unchanged with mild cardiomegaly and a markedly unfolded thoracic aorta . Bibasilar atelectasis noted . There is mild hilar congestion without frank pulmonary edema . No large effusion or pneumothorax . No evidence of pneumonia . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly with mild hilar congestion . No evidence of pneumonia .