Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The aorta remains tortuous . The cardiac silhouette is top normal . No definite focal consolidation is seen . There may be slight blunting of the posterior left costophrenic angle and a trace pleural effusion may be present . Left upper quadrant / subdiaphragmatic lucency may be within bowel / colon ; however , free air is not excluded . This finding was discussed with ___ ___ , physician assistant , at 9 :40 p .m . on ___ , via telephone .
    OUTPUT:
    
Slight blunting of the posterior left costophrenic angle could be due to a trace pleural effusion . Anterior left upper quadrant lucency could be intraluminal ; however , free air is not excluded . This finding was discussed with physician assistant , ___ , at 9 :40 p .m . on ___ , via telephone .