Chapter 15 The breasts/Fig 15.08.jpg

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Apocrine metaplasia in fibrocystic change. Breast cysts in fibrocystic change are commonly lined by apocrine epithelium (seen in the left of this photomicrograph). The cells in apocrine metaplasia are larger than normal epithelium (compared to the normal epithelial cells on the right), more columnar in shape and have abundant eosinophilic cytoplasm.