Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an ill - defined opacity in the anterior segment of the right upper lobe , well delineated by the minor fissure , which is new compared with prior exam . There is also an ill defined opacification of the right lower lung field obscuring the right hear border . In the left , there is a moderate pleural effusion with concurrent atelectasis , and a peripheral opacity in the lower lung field that was seen in prior exam and might represent loculated effusion versus scarring . The heart is moderately enlarged . The mediastinal and hilar contours are unremarkable . There is no evidence of pneumothorax . Sternotomy wires are intact .
    OUTPUT:
    
1 . Right upper lobe pneumonia . 2 . Right middle lobe opacity might represent pneumonia versus atelectasis . 3 . Left - sided pleural effusion with concurrent atelectasis and peripheral opacity which might represent scarring although superimposed pneumonia can not be excluded .