Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . A right thoracostomy tube is unchanged in position . A previously - seen right pneumothorax has resolved . There are no pleural effusions . A large right paramediastinal mass is again visualized . There is decreased central pulmonary vascular congestion . Bronchial stents are unchanged in position .
    OUTPUT:
    
1 . Unchanged position of a right thoracostomy tube . 2 . Previously - seen pneumothorax appears resolved .