This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory Radiology, Subject name: Radiology
[{'content': 'Millet seed like pattern is seen in \nSelect and explain. \nA. Milliary TB, B. Pulmonary hemosiderosis, C. Healed varicella pneumonia, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: - Miliary Tuberculosis- Due to Hematogenous spread of infection - At first, the chest radiograph may be normal, but then small, discrete nodules, 1-2 mm in diameter, become apparent, evenly distributed throughout both lungs. - other causes of Miliary shadows seen on Chest X-ray: Tuberculosis Histoplasmosis Sarcoidosis Healed varicella', 'role': 'assistant'}]