Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath tip terminates in the proximal right atrium . The heart size is normal . Opacity within the right medial upper lobe is unchanged compared to the PET - CT and there are bilateral diffuse perihilar increased interstitial markings correlating with septal thickening seen on CT . No large pleural effusion or pneumothorax is seen . No acute osseous abnormalities detected .
    OUTPUT:
    
Unchanged right upper lobe medial mass likely reflective of metastatic disease with evidence of lymphangitic spread of tumor , not significantly changed from the previous PET - CT .