Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is not engorged . Patchy opacity within the lingula is concerning for an area of infection . Right lung is clear . No pleural effusion or pneumothorax is demonstrated . Several fiducial markers are noted projecting over the upper abdomen , just to the right of midline .
    OUTPUT:
    
Findings concerning for lingular pneumonia . Followup radiographs after treatment are recommended to ensure resolution of this finding .