Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are symmetrically well expanded and well aerated without focal consolidation , pleural effusion or pneumothorax . An oblique density projecting over the left lateral lung base likely reflects plate - like atelectasis in the lingula , unchanged . The pulmonary vasculature is not engorged . The cardiomediastinal and hilar contours are within normal limits . There is a hiatal hernia .
    OUTPUT:
    
No acute cardiopulmonary process .