Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Again noted are diffuse , bilateral , coarse , interstitial opacities overall not significantly changed compared to the prior examination . However , there is increased opacification over lateral left lower lung , possibly parenchymal or related to tracking pleural effusion . Possible trace right pleural effusion . The heart is not well evaluated given the overall parenchymal opacification . Cardiomediastinal hilar silhouettes are grossly unchanged . Multiple bilateral rib deformities are not essentially unchanged .
    OUTPUT:
    
New opacities projecting over the lateral lower left lung may reflect a tracking pleural effusion , consolidation , or , given the peripheral location , pulmonary infarction from pulmonary embolus . To evaluate for effusion , lateral radiograph would be helpful . To evaluate for pulmonary embolus , chest CTA would be recommended .