Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low leading to crowding of the bronchovascular structures . There is no evidence of focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits . Exclusion of the left costophrenic angle is noted and the exam could be repeated to include this region no additional charge if warranted clinically . The
    OUTPUT:
    
No evidence of acute cardiopulmonary process .