Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is upper limit of normal , unchanged . The mediastinal contour is normal . The bilateral hila are normal . There are no focal lung consolidations . There is no evidence of pulmonary vascular congestion . There are no pneumothoraces or effusions .
    OUTPUT:
    
No evidence of pneumonia , pleural effusion , or other acute cardiopulmonary process .