Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is blunting of the right costophrenic angle compatible with persistent small - to - moderate effusion . Increased opacity at the left costophrenic angle is thought to represent fluid within the fissure , and there is some fluid seen posteriorly on the left as well . Superiorly , the lungs are grossly clear noting low inspiratory effort . The mediastinal silhouette is unchanged . No acute osseous abnormalities .
    OUTPUT:
    
Persistent bilateral effusions , right greater than left .