Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is of normal size . Cardiomediastinal contours are stable . Retrocardiac density with correlating opacity overlying the lower thoracic spine on the lateral view is compatible with left lower lobe consolidation . No large pleural effusion or pneumothorax . No radiopaque foreign body .
    OUTPUT:
    
Left lower lobe opacity may represent atelectasis , but in the appropriate clinical setting , pneumonia should be considered Findings were communicated via phone call by ___ to ___ on ___ at ___ .