Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal upright view of the chest was obtained portably . Low lung volumes result in bronchovascular crowding . There is no focal consolidation , pleural effusion or pneumothorax . Right basilar opacity is due to atelectasis . A subpleural opacity in the left mid lung is due to a left anterior rib mass seen on the prior CT . Heart size is normal . Mediastinal and hilar contours are normal .
    OUTPUT:
    
No pneumonia , edema , or effusion .