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
Millet seed like pattern is seen in 
Select and explain. 
A. Milliary TB, B. Pulmonary hemosiderosis, C. Healed varicella pneumonia, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: - 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