A 42-year-old woman presents to the clinic with a painless mass on the right side of her face that has been present for the past 8 months. On examination, there is a firm, mobile, non-tender mass in the parotid region. Facial nerve function is intact. Vital signs are normal. She has no history of fever, weight loss, or night sweats. She also has no history of smoking or alcohol use.
What is the most likely diagnosis?
Keep going — a set of ten like this one, one at a time.
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