Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Again , extremely low lung volumes are seen which limit the exam . There is no definite consolidation or large effusion . Cardiomediastinal silhouette is within normal limits . Osseous and soft tissue structures are unchanged .
    OUTPUT:
    
Extremely low lung volumes , but no definite acute cardiopulmonary process .