[Metaplastic ossification in the breast--a case report].

Metaplastic calcification and ossification originating in the subcutaneous fat of the breast are rare and commonly included in the malignant tumor. We reported a 24-year-old female who developed a huge metaplastic ossification without neoplasm in her right breast. To the best of our knowledge, this is the second case in the world literature and the first case in Taiwan.