Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a vague opacity in the right mid lung zone . The left lung is clear . There is persistent blunting of the right costophrenic angle , likely due to a small persistent right pleural effusion . It comparison to the prior exam , it has slightly decreased in size . There is no left pleural effusion . There is no pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
1 . Vague right mid lung opacity which is of uncertain etiology , although could represent an early pneumonia . Recommend further evaluation with oblique views . 2 . Interval decrease in size of the right pleural effusion . Results were discussed with Dr . ___ ___ resident ) at 7 :50 AM on ___ via telephone by Dr . ___ ___ the findings were discovered upon attending review .