This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
Most common anterior mediastinal tumor? 
Select and explain. 
A. Thymoma, B. Neurofibroma, C. Pericardial cyst, D. Bronchogenic cyst
A: Thymoma
Answer: A: Thymoma 
Explanation: Ref: Bailey and Love, 26th edition, P 868Most common anterior mediastinum tumor is thymoma. Choice B is seen in posterior mediastinum. Choice C and D are found in middle mediastinum.