Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left upper lobe lung nodule is again seen , and minimally increased in size , now measuring 11 mm . There is no effusion or pneumothorax . The cardiac silhouette and mediastinal contours are normal .
    OUTPUT:
    
1 . No acute chest abnormality . 2 . Left upper lobe nodule , essentially unchanged over a ___-year period .