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: Surgery
Gardner's syndrome is associated with all except 
Select and explain. 
A. Sebacious cyst, B. Desmoid tumor, C. Bony exostosis, D. Brain tumor
D: Brain tumor
Answer: D: Brain tumor 
Explanation: Brain tumor is seen with turcot syndrome.