Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Linear and patchy bibasilar airspace opacities may reflect atelectasis . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities detected .
    OUTPUT:
    
Mild linear and patchy bibasilar opacities , likely atelectasis , however a component of infection is not excluded in the correct clinical setting .