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: Medicine
Thymoma can be associated with all, except - 
Select and explain. 
A. Superior mediastinum syndrome, B. Myasthenia gravis, C. Hypergammaglobulinemia, D. Pure red cell aplasia
C: Hypergammaglobulinemia
Answer: C: Hypergammaglobulinemia 
Explanation: None