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 45-year-old woman is found to have multiple masses in her liver while performing abdominal ultrasonography for recurrent right upper quadrant abdominal pain. Biopsy of one of the masses discloses large plates of adenoma cells, which are larger than normal hepatocytes and contain glycogen and lipid. Regular septa, portal tracts, and bile ductules are absent. Which of the following is associated with this patient's condition?
assistant
Oral contraceptive pills