Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Redemonstrated is a left - sided Port - A - Cath with the tip seen terminating within the lower SVC . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . There is an 8 mm rounded structure projecting over the right upper lung with sharp margins , and may be external to the patient . The heart size is normal . Mediastinal contours are normal .
    OUTPUT:
    
1 . No radiographic evidence for acute cardiopulmonary process . 2 . 8 mm rounded structure projecting over the right upper lung . Findings are new since the prior exam , and the structure is sharply marginated , suggestive of a structure external to the patient .