Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Ill - defined hazy opacity is seen within the right middle lung field , likely within the right upper lobe , concerning for infection . Left lung is clear . Minimal blunting of the left costophrenic angle on the frontal view may be due to trace pleural fluid or pleural thickening . Multilevel degenerative changes are noted within the thoracic spine .
    OUTPUT:
    
Patchy opacity within the right upper lobe is concerning for an area of infection . Followup radiographs after treatment are recommended to ensure resolution of this finding .