Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged masslike opacity in the left upper lobe . No discrete pneumothorax identified . No new consolidation or pleural effusion . The size of the cardiac silhouette is mildly enlarged but unchanged . Degenerative changes of the both glenohumeral joints .
    OUTPUT:
    
No pneumothorax identified . Unchanged left upper lobe masslike opacity .