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': 'Perineural spread is seen in: \nSelect and explain. \nA. Mucoepidermoid carcinoma, B. Keratoacanthoma, C. Adenoid cystic carcinoma, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Perineural spread is seen in\n\nMucoepidermoid carcinoma\nKeratoacanthoma\nAdenoid cystic carcinoma\n\nKeratoacanthoma on occasion may invade perineural spaces, but this does not adversely affect the biologic behavior of the lesion; neither can it be used as a distinguishing characteristic between keratoacanthoma and epidermoid carcinoma.\nRef- Shafer's 7th Ed\xa0 P: 236", 'role': 'assistant'}]