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
The tumour exclusively found in parotid gland: 
Select and explain. 
A. Wahin tumour, B. Adenocarcinoma, C. Pleomorphic adenoma, D. Acinar cell tumour
A: Wahin tumour
Answer: A: Wahin tumour 
Explanation: Wahin tumour/papillary cystadenoma lymphomatosum is viually restricted to parotid gland. Occur more commonly in male than female.