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: Orthopaedics
Increased Radio - isotope uptake is seen in 
Select and explain. 
A. Osteoclastoma, B. Enchondroma, C. Pseudoarthrosis, D. Ewing's sarcoma
C: Pseudoarthrosis
Answer: C: Pseudoarthrosis 
Explanation: None