Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subtle right middle lobe patchy opacity obscures the right heart border on the frontal view and projects over the cardiac silhouette on the lateral view . Given this was not present 7 days prior , is felt to more likely represent pneumonia although underlying neoplastic process is not excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable and stable . No evidence of free air is seen beneath the diaphragms .
    OUTPUT:
    
Right middle lobe consolidation worrisome for pneumonia . Given patient 's history of metastatic disease , neoplastic process is not excluded although given development since the prior chest radiograph from 7 days prior , felt to more likely represent pneumonia .