Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to ___ , mediastinal drains , chest tube , nasogastric tube and endotracheal tube have been removed . Hazy opacity throughout the right lung has improved . Increasing basal atelectasis with bilateral effusions , small right moderate left . No interstitial edema . Possible tiny apical right pneumothorax .
    OUTPUT:
    
Possible tiny apical right pneumothorax .