Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . Consolidative opacity in the left upper lobe is concerning for pneumonia . Right lung is clear . There is no pulmonary vascular congestion . No pleural effusion or pneumothorax is seen . Minimal degenerative changes are seen within the thoracic spine along with mild dextroscoliosis .
    OUTPUT:
    
Left upper lobe pneumonia . Followup radiographs after treatment are recommended to ensure resolution of this finding .