This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ohopedics Oncology, Subject name: Orthopaedics
In which of the following multiple lesions are not seen? 
Select and explain. 
A. Enchondroma, B. Osteoid osteoma, C. Fibrous dysplasia, D. GCT
B: Osteoid osteoma
Answer: B: Osteoid osteoma 
Explanation: Osteoid osteoma: Zone of sclerosis surrounding a radiolucent pa is seen POLYOSTOTIC BONE LESIONS Fibrous dysplasia Enchondroma Osteochondroma Ewing's sarcoma Giant cell tumor (Goltz syndrome) Metastasis Multiple myeloma Bone infarction Osteomyelitis