Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky horizontal opacity in the right lower lung is most consistent with atelectasis . Otherwise , no focal consolidation , effusion , edema , or pneumothorax . No evidence of mediastinal free air . No evidence of subdiaphragmatic free air . The heart is normal in size . The descending thoracic aorta is slightly tortuous or ectatic . No mediastinal widening . No acute osseous abnormality .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Right lower lobe atelectasis . 3 . No pneumoperitoneum .