Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . Mild right basilar atelectasis is noted with unchanged right hemidiaphragmatic elevation . Small opacity at the left lung base is due to mediastinal lipomatosis as seen on the prior CT . Heart size is normal . Mild aortic tortuosity is unchanged .
    OUTPUT:
    
No pneumonia , edema , or effusion .