Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is not engorged . Hazy opacity is noted within the left lower lobe which is concerning for an area of infection . Right lung is clear except for linear atelectasis or scarring in the right mid lung field . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . Mild degenerative changes are noted in the thoracic spine . Moderate degenerative changes of the left glenohumeral joint are also noted .
    OUTPUT:
    
Hazy left lower lobe opacity concerning for pneumonia .