Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . The heart size is normal . The mediastinal and hilar contours are normal . There is a small hiatal hernia , unchanged from prior study .
    OUTPUT:
    
No radiographic evidence for acute cardiopulmonary process .