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
[{'content': 'Pleomorphic adenoma histology is characterized by? \nSelect and explain. \nA. Epithelial component, B. Endothelial component, C. Mesodermal component, D. Mixed epithelial and mesenchymal components', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Mixed epithelial and mesenchymal components 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. 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. 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.", 'role': 'assistant'}]