Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate clear lungs at this time . The upper lobe opacity has resolved . Cardiac size is normal . Aorta is slightly tortuous but otherwise unremarkable . There is no pleural effusion or pneumothorax . Apical scarring / pleural thickening is noted bilaterally .
    OUTPUT:
    
Resolution of left upper lobe pneumonia .