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
Symmetrical persistent enlargement of the parotid gland is seen in: 
Select and explain. 
A. Sjogren syndrome., B. Cylindroma., C. Mickuliz disease., D. All of the above.
C: Mickuliz disease.
Answer: C: Mickuliz disease. 
Explanation: None