Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a small right - sided pleural effusion which has improved slightly compared to ___ , and remains loculated in appearance . Spiculated opacity in the right upper lobe is overall unchanged . No evidence of pneumonia . Left lung is essentially clear . There is no pneumothorax . Stable cardiomediastinal silhouette . No acute osseous abnormalities .
    OUTPUT:
    
Stable appearance of spiculated right upper lobe opacity with interval decrease in size of right pleural effusion . No left pleural effusion .