Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , edema , effusion , or pneumothorax . The heart is top - normal in size . The mediastinum is not widened . The hila and pleura are normal . No osseous lesions suspicious for malignancy are infection . Surgical clips in the left axilla and subtle relative lucency in the left hemithorax relative to the right hemithorax are related to prior surgery and left mastectomy .
    OUTPUT:
    
1 . Top - normal heart size . 2 . No pneumonia or pneumothorax .