Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well expanded lungs . There is a retrocardiac opacity that is concerning for pneumonia . There is also left pleural effusion and a small amount of fluid located in the right minor fissure . Small granulomas are noted at the right lateral mid lung and left lateral mid lung . There is no pneumothorax . Calcification of the aortic knob is seen . The cardiomediastinal silhouette is partially obscured by the retrocardiac opacity and left pleural effusion , but otherwise is unremarkable . Visualized osseous structures are unremarkable .
    OUTPUT:
    
Retrocardiac opacity concerning for pneumonia and left pleural effusion . These findings were communicated to the GI clinic team at 11 :55 a .m . by phone .