Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small right - sided pleural effusion with fluid along the fissure is new since the prior . The left lung remains stable with scarring in the left apex . Mild cardiomegaly unchanged with dual lead pacemaker in similar position . Dilatation of the ascending thoracic aorta and unfolding unchanged .
    OUTPUT:
    
New very small right - sided pleural effusion . No pulmonary edema or acute pneumonia .