Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Aside from mild biapical pleural thickening , chest radiograph is unremarkable . The cardiomediastinal and hilar contours are normal . The lungs are clear , without consolidation , pulmonary edema , pleural effusion or pneumothorax . Mild pectus excavatum is noted .
    OUTPUT:
    
Mild biapical pleural thickening . No evidence to suggest active TB .