Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . Mild streaky linear retrocardiac opacity is most likely atelectasis . No focal consolidation , edema , effusion , or pneumothorax . An incidental accessory fissure projects obliquely over the right apex . The cardiomediastinal silhouette is unchanged . The descending thoracic aorta is slightly tortuous . Cervical anterior fixation hardware is incompletely imaged .
    OUTPUT:
    
No focal pneumonia .