Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent opacity at the right lung base in keeping with known persistent pleural effusion and regions of rounded atelectasis . Overall , the appearance has not changed since prior . There is a persistent residual right apical pneumothorax . The left lung remains clear . The cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
No significant interval change . Persistent right - sided pleural effusion with additional right basilar opacities compatible with rounded atelectasis as well as small persistent right apical pneumothorax .