Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal portable view of the chest was obtained . The heart is of normal size . Bilateral patchy pulmonary opacities are new since the prior radiograph , exaggerated by low lung volumes , and may represent multifocal pneumonia or aspiration . There is slight blunting of the right costophrenic angle , compatible with small pleural effusion . No pneumothorax is seen . Osseous structures are unremarkable and known osseous metastases are not appreciated on this exam . A metallic biliary stent is seen in the right upper quadrant .
    OUTPUT:
    
New patchy bilateral pulmonary opacities , compatible with either multifocal pneumonia or aspiration . Small right pleural effusion .