Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left upper lobe lung mass is again seen , better evaluated on recent prior CT . Lung volumes are low . There is decreased right paratracheal opacification compared to prior , likely representing decreased known paratracheal lymphadenopathy . There has been interval placement of a Port - A - Cath with tip projecting at the level of the low superior vena cava . No focal consolidation , pleural effusion , pneumothorax or pulmonary edema is detected . Heart and mediastinal contours are stable .
    OUTPUT:
    
Known left upper lobe lung mass and interval placement of a right Port - A - Cath with interval decrease in right paratracheal opacification , likely corresponding to known lymphadenopathy , without radiographic evidence for acute cardiopulmonary process .