Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 06 : 27 is submitted .
    OUTPUT:
    
Bilateral subclavian central lines , endotracheal tube and nasogastric tube are unchanged in position . Overall cardiac and mediastinal contours are stable . Left lower lobe consolidation persists likely reflecting lower lobe collapse and there may be an associated layering left effusion . No pneumothorax is seen . No evidence of pulmonary edema .