Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are normal . Lungs are clear . There is a small left pleural effusion . There is no pneumothorax . A small pneumoperitoneum is noted , expected postoperatively . Dilated left colon is incompletely imaged .
    OUTPUT:
    
Small left pleural effusion . Expected small pneumoperitoneum . Dilated left colon is incompletely imaged .