Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . The lungs are hyperinflated with upper lobe lucency and flattened diaphragm suggesting underlying COPD . A nodular vague opacity projecting over the left lower lung likely reflects a prominent nipple shadow in this patient with mild gynecomastia . There is no definite sign of pneumonia , CHF , pleural effusion , or pneumothorax . Bony structures are intact . Aorta is unfolded , though this appears stable . Heart is not enlarged .
    OUTPUT:
    
No signs of pneumonia . Emphysema again noted .