Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic pleural thickening and / or fluid at the right base laterally and posteriorly are similar to the prior study . No new focal airspace opacity is detected . The lungs are normally expanded . The cardiomediastinal silhouette and hilar contours are normal . There is no left pleural effusion or pneumothorax . Gallbladder stones project over the right lower quadrant but are better evaluated on CT of the abdomen and pelvis from ___ .
    OUTPUT:
    
No evidence of acute cardiopulmonary abnormality . Chronic pleural thickening and / or fluid at the right base .