A case of a subcutaneous fibroadenoma on an arm of an 18-year-old woman is presented. The neoplasm, thought clinically to be a lipoma, may have arisen in ectopic breast tissue. Dermatologists and dermatopathologists should be aware that fibroadenomas histologically identical with those seen in the breast have been observed along the milkline and may also occur in other sites.
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Amazon et al. (1985) studied this question.
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