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: Surgery
All are true about thymoma except: 
Select and explain. 
A. MC tumor in anterior mediastinum, B. Treatment is thymectomy, C. Symptomatic cases present as endocrine abnormalities, D. May be associated with myasthenia gravis
C: Symptomatic cases present as endocrine abnormalities
Answer: C: Symptomatic cases present as endocrine abnormalities 
Explanation: Answer- C. Symptomatic cases present as endocrine abnormalitiesCharachteristic SyndromesMyaesthenia Gravis (most common)Acquired Hypogammaglobulinemia (10%)Pure Red Cell Aplasiac