Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , accentuating bronchovascular crowding . Allowing for such , there is no confluent consolidation to definitely suggest pneumonia . There is subsegmental atelectasis in the left lung base . No pneumothorax , vascular congestion , or pleural effusion .
    OUTPUT:
    
1 . Subsegmental atelectasis in the left base . 2 . Low lung volumes accentuating bronchovascular crowding , without confluent consolidation .