Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . Small left pleural effusion remains . The heart is mildly enlarged . The thoracic aorta slightly tortuous or ectatic , unchanged . A are not calcifications unchanged . No focal consolidation , pneumothorax , or pulmonary edema .
    OUTPUT:
    
1 . Small left pleural effusion , unchanged since ___ . 2 . No radiographic evidence of a pulmonary mass .