Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were compared to previous exam from ___ . The lungs are clear of confluent consolidation . Increased opacity at the lung bases on the lateral is likely due to atelectasis given low lung volumes . Cardiomediastinal silhouette is grossly stable given differences in patient positioning . Osseous and soft tissue structures are unchanged , noting degenerative changes at the acromioclavicular joints . There is , however , mild lower thoracic / upper lumbar dextroscoliosis .
    OUTPUT:
    
No definite acute cardiopulmonary process .