This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
[{'content': 'Which among the following is a most common neoplasm of Salivary gland - \nSelect and explain. \nA. Adenocystic carcinoma, B. Pleomorphic adenoma, C. Mucoepidermoid, D. Mixed tumour', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pleomorphic adenomas account for 40% to 70% of all tumors of the salivary glands, most commonly occurring in the tail of the parotid." - Sabiston Also, know IInd MC tumor of parotid - Wahins MC malignant tumor of salivary gland - Mucoepidermoid Ca The parotid tumor which spread through neural sheath - Adenoid cystic Ca Best diagnostic modality for parotid swelling is - FNAC Open incisional biopsy is contraindicated.', 'role': 'assistant'}]