Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe cardiomegaly is stable . The aorta is tortuous . Small to moderate left hydro pneumothorax is probably unchanged allowing the difference in positioning of the patient . Small right pleural effusion with adjacent atelectasis is unchanged . Left pigtail catheter remains in place . There are moderate to severe degenerative changes in the thoracic spine . Retrocardiac atelectasis have improved
    OUTPUT:
    
Stable small to moderate left hydro pneumothorax