Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heterogeneous opacities in the left mid to lower lung as well as the right lower lung are similar to the prior study from ___ allowing for differences in patient positioning , concerning for multifocal pneumonia . There are no definite pleural effusions . No pneumothorax . The cardiac and mediastinal contours are not significantly changed , allowing for difference in patient rotation .
    OUTPUT:
    
Multifocal pneumonia , similar to the prior study from ___ .