Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to priors dating back to ___ , there has been no significant interval change . Opacity in the left mid and lower lung is unchanged . There is no new consolidation or effusion . The cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Persistent left mid to lower lung opacity which could be potentially infection , radiation pneumonitis or combination of both .