Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As on prior , low lung volumes are noted with secondary crowding of the bronchovascular markings . There is no definite superimposed consolidation or evidence of edema . Atelectasis identified in the left mid lung . Cardiomediastinal silhouette is unchanged . No acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes without definite superimposed acute cardiopulmonary process .