Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Position of endotracheal tube and right - sided Swan - Ganz is unchanged . NG tube projects over the stomach . Sternotomy wires and outline of artificial mitral valve noted . Heart is moderately enlarged as before . Mild bilateral pleural effusions are unchanged . Bilateral patchy lung opacifications , likely represent atelectasis and crowding of pulmonary vasculature secondary to low volumes . No focal areas of consolidation to suggest pneumonia . No pneumothorax .
    OUTPUT:
    
No significant changes compared to the prior study .