This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Miliary shadow on chest X-ray is not seen in: March 2010 \nSelect and explain. \nA. Pneumoconiosis, B. Sarcoidosis, C. Tuberculosis, D. COPD', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: COPD Conditions producing miliary shadows on chest X-ray: Sarcoidosis Silicosis/pneumoconiosis Extrinsic allergic alveolitis Langerhans cell histiocytosis Lymphangitis carcinomatosis Miliary tuberculosis Metastases', 'role': 'assistant'}]