Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate prominent cardiac silhouette . The mediastinal and hilar contours are unremarkable . The lungs are clear with the exception of trace streaky atelectasis in the left base . There is no pneumothorax , vascular congestion , or pleural effusion .
    OUTPUT:
    
Prominent cardiac silhouette without overt failure .