Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ 01 :56 is submitted .
    OUTPUT:
    
A right chest tube remains in place and there is a stable small right apical pneumothorax which extends medially . The overlying subcutaneous emphysema within the chest wall and neck soft tissues and pneumomediastinum is likely not significantly changed . There is a layering right effusion . Lung volumes are low with crowding of the vasculature . There is increasing opacity at the left base with a stable patchy opacity at the right base . Although these findings may reflect atelectasis , superimposed infection can not be excluded . Clinical correlation is advised .