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
All are T cell lymphomas, EXCEPT: 
Select and explain. 
A. Lymphoplasmacytic lymphoma, B. Mycosis fungoides, C. Anaplastic large cell lymphoma, D. Aggressive NK cell leukemia
A: Lymphoplasmacytic lymphoma
Answer: A: Lymphoplasmacytic lymphoma 
Explanation: Lymphoplasmacytic lymphoma is a B cell lymphoma, all others are T cell lymphomas. Ref:Harrisons principles of internal medicine 18th edition, Page: 920.