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 55-year-old woman comes to the physician with concerns about swelling and pain in her right breast. Physical examination shows erythema and prominent pitting of the hair follicles overlying the upper and lower outer quadrants of the right breast. There are no nipple changes or discharge. A core needle biopsy shows invasive carcinoma of the breast. Which of the following is the most likely explanation for this patient's skin findings?
assistant
Obstruction of the lymphatic channels