Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse interstitial abnormality is consistent with chronic lung disease . Superimposed upon this process are new areas of consolidation within the right upper lobe and left lower lobe as well as apparent worsening of diffuse reticular opacities have . The cardiac and mediastinal contours are stable . There is no pneumothorax . Small left pleural effusion is new .
    OUTPUT:
    
Superimposed upon pre-existing chronic fibrotic lung disease are new areas of consolidation in the right upper and left lower lobe , concerning for multifocal pneumonia in the appropriate clinical setting . Considering associated worsening reticular opacities , differential diagnosis includes asymmetrical distribution of pulmonary edema and acute exacerbation of interstitial lung disease .