Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an opacity overlying the right third anterior rib space , though difficult to localize . Heart size is within normal limits . Again seen is a mildly enlarged mediastinal contour , likely due to dilated ascending aorta which was previously seen on CTA from ___ , though stability is difficult to assess due to differences in technique . No a valvular calcifications are seen . There is no evidence for pulmonary edema , pulmonary consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . No evidence for active cardiopulmonary disease . 2 . Possible right lung nodule , difficult to localize . Repeat all exam in ___ weeks for evaluation with either PA view followed by additional views after reviewing the image with the radiologist or shallow oblique views is recommended . 3 . Dilated ascending aorta , difficult to establish stability since CTA on ___ .