Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Rotated positioning . Right - sided Port - A - Cath tip lies near the cavoatrial junction . 2 separate tubes overlie the right lung base , similar to prior . The possibility of a small residual right apical pneumothorax can not be excluded . The prior study raise the possibility that there was fluid associated with the pleural space in this area . Subcutaneous emphysema in the right supraclavicular fossae , extending into the right lower neck , is similar to the prior film . There is cardiomegaly , similar to prior . The previous right cardiophrenic opacity has improved . A small right pleural effusion is now visible . Ppacity Retrocardiac opacity is again seen , slightly more pronounced . Doubt CHF .
    OUTPUT:
    
Complex appearance at the right lung apex makes it difficult to exclude a small pneumothorax . No evidence for a large pneumothorax . Right cardiophrenic opacity has is markedly improved . Retrocardiac opacity is slightly more pronounced . Small right effusion is new .