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
An otherwise healthy 45-year-old woman comes to the physician because of a 2-week history of an itchy rash on her left nipple. The rash began as small vesicles on the nipple and spread to the areola. It has become a painful ulcer with yellow, watery discharge that is occasionally blood-tinged. She has asthma treated with theophylline and inhaled salbutamol. Her younger sister was diagnosed with endometrial cancer a year ago. Examination shows a weeping, ulcerated lesion involving the entire left nipple-areolar complex. There are no breast masses, dimpling, or axillary lymphadenopathy. The remainder of the examination shows no abnormalities. Which of the following is the most likely diagnosis?
assistant
Paget disease of the breast
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