Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates very low lung volumes with resulting bronchovascular crowding . New opacities are seen at the bilateral bases , left greater than right , and in the setting of very low lung volumes , may represent atelectasis , pneumonia , or a combination . Heart size is normal . There is no pneumothorax .
    OUTPUT:
    
New opacities are seen at the bilateral bases , left greater than right , and in the setting of very low lung volumes , may represent atelectasis , pneumonia , or a combination .