Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal view of the chest demonstrates low lung volumes . Swan - Ganz catheter has been removed . There is interval removal of the NG , ET and chest tubes . Multiple overlying structures in the right apex limit evaluation . Sternotomy wires appear intact . Right costophrenic angle is obscured , suggestive of small pleural effusion . There is no left pleural effusion . There is mild - to - moderate cardiomegaly . Perihilar vascular congestion is present . Bilateral opacities with relative sparing of the upper lung zones persist . Pleural plaques and subpleural reticular opacities are better appreciated on prior CT . Partially imaged upper abdomen is unremarkable . Right internal jugular central venous catheter tip projects over confluence of right IJ and subclavian vein .
    OUTPUT:
    
1 . Interval removal of Swan - Ganz , ET , NG and chest tube . Multiple overlying structures in the right lung apex limit evaluation for small apical pneumothorax . No appreciable pneumothorax . 2 . Low lung volumes . Persistent bilateral airspace opacities . Small right pleural effusion .