Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new wedge - shaped opacity extending to the pleura in the inferior portion of the right upper lobe . There may and lungs are clear without pleural effusion , pneumothorax , or focal consolidation . Heart size , mediastinal , and hilar contours are unchanged .
    OUTPUT:
    
New wedge - shaped opacity in the right upper lobe may be due to infection or pulmonary infarct . Given known history a is positive PPD , tuberculosis is not excluded and should be considered . CT chest could be performed for further characterization and workup .