system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 22-year-old woman comes to the physician for a routine health maintenance examination. She has no history of serious illness. Pelvic examination shows a pink, 2 x 2-cm, fluctuant swelling at the right posterior vaginal introitus. The swelling is most likely derived from which of the following structures?
assistant
Greater vestibular glands