Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to prior , there has been no significant interval change . Again seen is a vague opacity at the right lung base which corresponds to abnormality in prior abdominal CT . Elsewhere , lungs are clear . The cardiomediastinal silhouette is within normal limits . There is no free intraperitoneal air . No acute osseous abnormalities .
    OUTPUT:
    
No significant interval change , persistent hazy right basilar opacity . No free intraperitoneal air .