Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . The chest is hyperinflated . There is no pleural effusion or pneumothorax . Vague persistent posterior opacification in the right lower lobe suggests residual atelectasis or scarring . A consolidative opacity in the right upper lobe appears very similar to the prior study .
    OUTPUT:
    
Persistent right upper lobe opacity . Characteristics are not typical for metastatic esophageal cancer . However , persistence of the opacity may suggest consideration of diagnoses alternative to infectious pneumonia including inflammatory forms of pneumonitis or primary adenocarcinoma . Short - term follow - up chest CT may be helpful for more detailed comparison to the prior CT results .