Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval worsening of diffuse heterogeneous opacification of the right lung . Poorly defined opacities in the left mid and lower lung are new . These findings are superimposed on chronic reticular opacities . There is no pleural effusion or pneumothorax . The heart is normal in size . Bilateral small pleural effusions are present , right greater than left . The patient is status post median sternotomy with fractures of the two superior most sternal wires again seen .
    OUTPUT:
    
New and worsening multifocal lung opacities , most severe in the right lung , concerning for multifocal pneumonia in the appropriate clinical setting . Differential diagnosis includes aspiration and pulmonary hemorrhage .