Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal and hilar contours are unremarkable . There is no pulmonary vascular congestion . Minimal blunting of the costophrenic angles posteriorly may suggest trace effusions . Lingular linear opacity likely reflects chronic scarring . No focal consolidation or pneumothorax is present . No acute osseous abnormalities are detected .
    OUTPUT:
    
Minimal blunting of the costophrenic angles posteriorly may suggest trace bilateral pleural effusions . No pulmonary edema identified .