You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A 45-year-old man comes to the physician because of a small mass in his oral cavity. Physical examination shows left facial nerve palsy and a firm, mobile, painless mass in the left parapharyngeal space Biopsy from the mass in the oral cavity shows chondromyxoid stroma and epithelium. 
Which of the following best explains this mass? and explain in detail?
None