Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest is compared to previous exams from earlier the same day at 1 :48 p .m . There are extremely low lung volumes which limits the exam . Linear opacities at the bases , more so on the left than on the right , are suggestive of subsegmental atelectasis . Superiorly , the lungs are clear . Cardiomediastinal silhouette is stable .
    OUTPUT:
    
Extremely low lung volumes with left base atelectasis , developing consolidation not excluded in the appropriate clinical setting .