Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top - normal . Mediastinal contours are unremarkable . Pulmonary vasculature is engorged . Streaky left basilar opacity likely reflects area of atelectasis . No focal consolidation , pleural effusion , or pneumothorax is identified . Moderate multilevel degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
Streaky left basilar opacity , likely atelectasis . No pulmonary edema .