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 is associated with all except - 
Select and explain. 
A. Graves disese, B. Hyper gamma globulinemia, C. Red cell aplasia, D. Thrombocytopenia
B: Hyper gamma globulinemia
Answer: B: Hyper gamma globulinemia 
Explanation: None