Forms cords and tubules infiltrating dense stroma. Soft, fleshy, yellow, well demarcated, pushing borders . Large tumor cells admixed with lymphocytes with minimal intervening stroma. A form of ductal carcinoma that arises from main lactiferous ducts and extends to involve skin of nipple and areola. Slide 113 1.
Diagnosis is fibroadenoma.
Well defined nodule composed of fibrous tissue and ducts. Yes, second most common benign pathologic condition. Yes it is neoplastic. It is benign. Cystosarcoma phyllodes or phyllodes tumors are related to fibroadenomas, but are large, bulky tumors in which the stroma differs by being more cellular.