Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Very low lung volumes cause bronchovascular crowding . Opacities in the medial lungs bilaterally may represent collapsed lower lobes or consolidation . There is no definite pleural effusion , pneumothorax , or pulmonary edema . Allowing for patient positioning and low lung volumes the cardiomediastinal silhouette is likely unchanged . Evaluation for pneumoperitoneum is limited on these semi-upright views .
    OUTPUT:
    
Very low lung volumes with medial consolidative opacities bilaterally which may represent lower lobe collapse or consolidation , depending on the clinical circumstances .