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: ENT
Which of the following is true about pleomorphic adenoma except ? 
Select and explain. 
A. Most common tumor of salivary glands, B. Has a tendency to invade perineural space, C. Most commoly involves the parotid gland, D. It is also called a mixed tumor
B: Has a tendency to invade perineural space
Answer: B: Has a tendency to invade perineural space 
Explanation: Pleomorphic adenoma This is the Commonest neoplasm of Salivary glands. The most Common salivary gland involved is Parotid - represent about 60% tumors in the parotid. o Submandibular and minor salivary glands may also be involved rarely. Pleomorphic adenoma - Parotid > Submandibular > minor salivary glands. They are derived from a mixture of ductal (epithelial ) and myoepithelial cells and therefore they show both epithelial and mesenchymal differentiation - Also called mixed tumor.