Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left hemidiaphragm appears chronically elevated . There are increased left lower lobe opacities likely reflecting combination of worsening of known left lower lobe pneumonia versus radiation pneumonitis along with an adjacent pleural effusion . The left upper lung and the right lung appear clear . Previously noted subpleural radiation changes are better delineated on dedicated CT . No acute fractures are identified .
    OUTPUT:
    
Increased opacities at the left lung base likely reflecting combination of worsening infectious process along with a new adjacent pleural effusion . Alternatively , these findings may be representative of radiation pneumonitis with an adjacent pleural effusion .