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63290 Pathology

A 60-year-old woman presents with a large breast mass that she first detected 3 months ago. Mammography reveals a well-circumscribed mass measuring 8 cm in diameter. A breast biopsy shows loose fibroconnective tissue with a sarcomatous stroma, abundant mitoses, and nodules and ridges lined by cuboidal epithelial cells. Which of the following is the appropriate diagnosis?

AFibroadenoma
BMedullary carcinoma
CPaget disease
DPhyllodes tumor
Pathology
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