Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small bilateral pleural effusions are new since ___ . The heart is mildly enlarged . Widened appearance of the mediastinum appear unchanged . Tortuous aorta is again seen . The lungs are grossly clear .
    OUTPUT:
    
1 . No pneumonia or pulmonary edema . 2 . Chronic widened appearance of the mediastinum . Radiographically occult dissection can not be excluded . 3 . Small bilateral pleural effusions , new since ___ .