This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
All of the following are examples of a round cell tumor, except: 
Select and explain. 
A. Neuroblastoma, B. Ewing's sarcoma, C. Medulloblastoma, D. haemangioblastoma
D: haemangioblastoma
Answer: D: haemangioblastoma 
Explanation: The differential diagnosis of small round cell tumors include: Neuroblastoma Wilms tumor Lymphoma Rhabdomyosarcoma Ewing sarcoma/primitive neuroectodermal tumor Medulloblastoma Retinoblastoma neuroblastoma Ewing sarcoma Haemangioblastoma is CNS tumor showing proliferation of capillaries and thin walled vessels.