Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest demonstrate well expanded clear lungs . There is mild cardiomegaly , which is unchanged . The mediastinum is unchanged in appearance . Tere is no pneumothorax , pleural effusion , or consolidation .
    OUTPUT:
    
No evidence of enlarged mediastinal lymph nodes or lung lesions .