Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacities at the right lung base have decreased compared to the preceding radiographs from ___ and ___ . The remainder of the lungs are clear . Mild cardiomegaly is unchanged . The mediastinal contours are unchanged . Blunting of the right costophrenic angle suggests a tiny effusion . There is no definite left - sided effusion . No pneumothorax .
    OUTPUT:
    
1 . Decreased right basilar opacities , likely resolving atelectasis . 2 . Likely trace right pleural effusion .