Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An azygos fissure and azygos lobe are noted . The lungs are well expanded and clear without lobar consolidation , pleural effusion , pneumothorax , or frank pulmonary edema . Subtle left basilar airspace opacity likely reflects atelectasis . The cardiomediastinal silhouette is unchanged in appearance .
    OUTPUT:
    
No acute cardiopulmonary process .