Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Streaky retrocardiac linear density corresponding to area of bronchiectasis on prior CT scans is unchanged . No new consolidation . The hila and pulmonary vasculature are normal . No pleural effusions or pneumothorax . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
No pneumonia . Unchanged retrocardiac bronchiectasis .