Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are moderately well inflated . Bilateral heterogeneous dense opacities are seen obscuring the right heart border and left hemidiaphragm . The heart is partially visualized due to overlying parenchymal abnormality and appears unremarkable . Mediastinal contour and hila are unremarkable . A small left pleural effusion is noted . No right pleural effusion . No pneumothorax .
    OUTPUT:
    
Right middle lobe and left lower lobe pneumonia or aspiration pneumonia with small left pleural effusion .