Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable view of the chest demonstrates bibasilar opacities , new since prior exam , right > left . Left costophrenic angle is obscured , suggestive of trace pleural effusion . Hilar and mediastinal silhouettes are unchanged . The aortic arch calcifications are again noted . Mild cardiomegaly persists . There is no pneumothorax . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Bilateral lower love opacities concerning for pneumonia . Trace left pleural effusion .