Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest ___ at 14 : 20 are submitted .
    OUTPUT:
    
Overall cardiac and mediastinal contours are stable . Lung volumes are lower and there is a patchy opacity at the right lung base which could represent atelectasis , developing pneumonia or aspiration . Clinical correlation is advised . Followup imaging may be helpful . No pulmonary edema or pneumothorax .