Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . There is borderline cardiomegaly and unfolding of the thoracic aorta . The cardiomediastinal contours are otherwise unremarkable . Slightly increased bibasilar densities likely relate to increased breast attenuation . There is no definite consolidation , pleural effusion . There is no pneumothorax .
    OUTPUT:
    
No evidence of pneumonia .