Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Except for minimal left lower lung atelectasis at the cardiophrenic angle the remaining of the lungs are unremarkable . There is no pneumothorax or pneumomediastinum . Mediastinal and cardiac contours are normal . There is no pleural effusion .
    OUTPUT:
    
There are no significant cardiopulmonary findings . Minimal atelectasis at the left costodiaphragmatic .