This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Salivary Glands, Subject name: Pathology
[{'content': "Invasion of perineural space is a feature of \nSelect and explain. \nA. Pleomorphic adenoma, B. Wahin's tumor, C. Mucoepidermoid carcinoma, D. Adenoid cystic carcinoma", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Adenoid cystic carcinoma Most common location -Parotid & submandibular glands are M/E - Small cells having dark, compact nuclei & scant cytoplasm. Pattern : Tubular, solid, or cribriform patterns reminiscent of cylindromas arising in adnexa of skin Slow growing, adenoid cystic carcinomas are unpredictable tumors with tendency to invade perineural spaces & are stubbornly recurrent.', 'role': 'assistant'}]