Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 14 : 13 is submitted .
    OUTPUT:
    
A right basilar pigtail catheter remains in place . No pneumothorax is appreciated , although the sensitivity to detect pneumothorax is diminished given semi erect technique . There continues to be more focal nodular opacity in the right mid to lower lung as well some lateral pleural thickening , which when correlated with the CT dated ___ , appears to predominantly correspond to a multiloculated pleural fluid collection and combination of atelectasis and pneumonia . Lung volumes remain low . Linear opacity in the left base likely reflects subsegmental atelectasis . No pulmonary edema . Overall cardiac and mediastinal contours are stable .