Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , resulting in bronchovascular crowding . Area of opacity in the right lower lobe may represent atelectasis , however aspiration or pneumonia could be considered in the appropriate clinical setting . The heart remains enlarged . The aorta is tortuous . There is no pneumothorax .
    OUTPUT:
    
Right lower lobe opacity may represent atelectasis , however aspiration or pneumonia could be considered in the appropriate clinical setting .