Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The NG tube has been removed . A left basilar airspace opacity appears more plate - like today , and is characteristic of atelectasis . The right lung is clear . There is no pneumothorax . Mild cardiomegaly despite the projection is stable . The nasogastric tube has been removed .
    OUTPUT:
    
Stable left basilar subsegmental atelectasis .