Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to prior CT scan from ___ . Small - to - moderate right - sided pleural effusion is again noted with probable underlying atelectasis , possible consolidation . The left lung is clear . Cardiomediastinal silhouette is stable as are the osseous and soft tissue structures . Partially visualized filter identified in the mid abdomen as well as surgical clips in the right upper quadrant suggesting prior cholecystectomy .
    OUTPUT:
    
No change from recent CT scan which demonstrates small to moderate sized right - sided pleural effusion with underlying parenchymal opacity , potentially atelectasis or consolidation .