Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Relative sites opacity projecting over the lung bases bilaterally is likely due to overlying soft tissue . No correlate is seen on the lateral views . No definite focal consolidation . There is no pneumothorax . There is a mild atelectasis at the lateral left lung base and a very trace left pleural effusion is not excluded . No large pleural effusion is seen . There may be a hiatal hernia . The cardiac silhouette is top - normal . The mediastinal and hilar contours are unremarkable .
    OUTPUT:
    
Minimal lateral left base atelectasis with possible very trace pleural effusion although no large pleural effusion seen . No focal consolidation .