Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The previous seen right upper lobe opacity has resolved . The lungs are clear . The hila and pulmonary vascular are normal . No pleural effusions or pneumothorax . The cardiomediastinal silhouette is normal . No obvious osseous abnormalities .
    OUTPUT:
    
Resolution of right upper lobe opacity . Normal chest radiograph .