Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . Heart size is borderline enlarged . Mediastinal and hilar contours are within normal limits . There is no overt pulmonary edema . No focal consolidation , pleural effusion or pneumothorax is identified . No subdiaphragmatic free air is present . Punctate calcifications in the region of left upper quadrant may reflect ingested contents within the bowel .
    OUTPUT:
    
No acute cardiopulmonary abnormality .