Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a Port - A - Cath overlying the right upper lung with the tip terminating in the right atrium . There is a left - sided chest tube within tip terminating in the apex , without any evidence of pneumothorax . There is improvement in lingular aeration . There is a poorly defined opacity in the superior segment of the left lower lobe at the site of the mass noted on the prior chest CT . There are small unchanged bilateral pleural effusions . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Port - A - Cath with tip in the right atrium . 2 . Left chest tube in appropriate positioning without pneumothorax . 3 . Small unchanged bilateral pleural effusions . 4 . Improvement in lingular atelectasis . Persistent left lower lobe lung mass , more fully evaluated by a recent CT .