Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The mediastinal and hilar contours are normal . The pulmonary vascularity is normal . Lungs are clear . Previously described nodular opacity in the left upper lobe on the chest radiograph ___ is not visualized on the current exam . No pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Previously noted nodular opacity within the left upper lobe on the chest radiograph study from ___ is not clearly visualized on the current exam .