Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval removal of right - sided chest tube . The previously seen right apical pneumothorax is reduced in size . There are stable moderately low lung volumes with pleural effusion , essentially unchanged . There is stable cardiomegaly . Swan - Ganz catheter now terminates within the right main pulmonary artery . Endotracheal tube is again seen in place , unchanged in position no less than 3 cm from the carina .
    OUTPUT:
    
Interval removal of right chest tube with reduction in previously seen right apical pneumothorax . Remainder of exam is essentially unchanged .