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 41-year-old woman comes to the physician because of bleeding from the nipple of her right breast for 3 months. There is no bleeding from the other breast. Menses occur at regular 30-day intervals and lasts for 5 days with moderate flow. Her last menstrual period was 1 week ago. Her mother died of breast cancer at the age of 53 years. She does not smoke or drink alcohol. She appears healthy. Her temperature is 37°C (98.7°F), pulse is 76/min, and blood pressure is 118/70 mm Hg. Cardiopulmonary examination shows no abnormalities. The abdomen is soft and nontender. Breast examination shows bleeding of the right breast on application of pressure with no palpable mass. The left breast shows no abnormalities. There is no palpable axillary lymphadenopathy. Pelvic examination shows a normal vagina and cervix. Ultrasonography shows a dilated duct enclosing a well-defined solitary mass. Which of the following is the most likely diagnosis?
assistant
Intraductal papilloma