This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Anatomy
In which of the following conditions polyostotic lesions are not seen 
Select and explain. 
A. Hemangioma, B. Osteoid osteoma, C. Fibrous dysplasia, D. Multiple myeloma
B: Osteoid osteoma
Answer: B: Osteoid osteoma 
Explanation: Multiple tumors are Fibrous dysplasia GCT Osteochondroma Enchondroma Hemangioma Multiple myeloma Refer clinical imaging by Denis Marchiori 1112p