This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neoplasia, Subject name: Pathology
Which is not seen in the anterior mediastinum:(1987) 
Select and explain. 
A. Teratoma, B. Thymic tumours, C. Thyroid tumours, D. Neurofibroma
D: Neurofibroma
Answer: D: Neurofibroma 
Explanation: Ans: d