Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The inspiratory lung volumes remain very low with resultant accentuation of cardiomediastinal and bronchovascular structures . The right - sided Port - A - Cath terminates in the proximal right atrium or cavoatrial junction . There is calcification in the aortic knob . There is no large pleural effusion or pneumothorax identified on this single semi-erect view . The bones are diffusely sclerotic with mixed areas of osteolysis , consistent with known metastatic breast cancer . Prominent retrocardiac density is consistent with a large hiatal hernia seen on the abdominal CT of ___ .
    OUTPUT:
    
1 . Very low lung volumes without pleural effusion . 2 . Large hiatal hernia . 3 . Unchanged evidence of diffuse osseous metastatic disease .