Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views were reviewed . The cardiomediastinal and hilar contours are stable . There is no pleural effusion or pneumothorax . The lungs are well expanded . Vague density in the lateral left mid lung field without a clear correlate on the lateral view may be due to overlapping structures , but evolving consolidation is not excluded .
    OUTPUT:
    
Vague left mid lung zone opacity only appreciated on the frontal view which may be due to overlapping structures , but evolving consolidation is not excluded .