Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes remain decreased but improved from the most recent prior study . There is no significant pleural effusion or pneumothorax on this single frontal view . Minimal patchy opacities projecting over the left mid lung field may represent atelectasis . There is no focal consolidation concerning for pneumonia . Mild streaky opacification of the bilateral lung bases is most compatible with atelectasis on the left greater than the right . Retrocardiac opacification corresponds to the patient 's known large hiatal hernia . The cardiomediastinal contours are unchanged . There is no pulmonary vascular engorgement or edema .
    OUTPUT:
    
No focal consolidation concerning for pneumonia . Unchanged large hiatal hernia .