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: Pathology
Mazabraud's syndrome is: 
Select and explain. 
A. Fibrous dysplasia + cafe au lait spots., B. Fibrous dysplasia + intramuscular myxoma., C. Fibrous dysplasia + peripheral neuritis., D. None.
B: Fibrous dysplasia + intramuscular myxoma.
Answer: B: Fibrous dysplasia + intramuscular myxoma. 
Explanation: None