Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port -A - Cath is again noted . There is a small right pleural effusion , likely smaller since ___ . The lungs are otherwise clear without focal consolidation or pulmonary edema . Nipple shadows project over the lung bases bilaterally . The cardiomediastinal silhouette is stable . No acute osseous abnormalities , subtle height loss of the mid thoracic vertebral body is unchanged . Surgical clips noted in the right upper quadrant .
    OUTPUT:
    
Small persistent right - sided pleural effusion . No superimposed acute cardiopulmonary process .