Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . In comparison with scout image from CT from ___ , again seen is a large left perihilar mid - to - lower lung opacity which on the prior CT corresponded to innumerable pulmonary nodules , although superimposed infection can not be excluded . Nodular opacities in the right lung to a lesser extent than on the right are again seen . There is blunting of the left costophrenic angle likely corresponding to pleural effusion and is also seen on prior CT .
    OUTPUT:
    
Left greater than right pulmonary opacities similar as compared to scout image from CT from ___ , given differences in technique , although superimposed infectious process can not be excluded . Slight blunting of the left costophrenic angle is likely due to small left pleural effusion .