Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacity projecting over the lingula likely reflects components of post-obstructive pneumonia as well as edema / hemorrhage from recent procedure . This opacity obscures the left heart border , but the heart size is likely normal . Mediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . No pneumomediastinum is present .
    OUTPUT:
    
1 . No pneumomediastinum or pneumothorax . 2 . Lingular opacity reflects post-obstructive pneumonia and / or post-treatment changes .