Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is unchanged opacification of the surgical cavity and unchanged appearance of left basal pulmonary findings including complete obliteration of the left diaphragmatic contour . Additionally , the parenchymal densities in the mid left lung are increased from prior examination and may represent residual disease .
    OUTPUT:
    
Unchanged appearance of opacities filling the surgical cavity with continued stability of left lower opacities obscuring the hemidiaphragm , which may represent atelectasis or effusion . As previously discussed , the parenchymal densities in the left mid lung are large compared to prior exam and , if clinically indicated , would be amenable to further evaluation by dedicated chest CT .