Cystosarcoma phyllodes metastatic to the mandible: report of a rare case and literature review.

Cystosarcoma phyllodes is a rare breast tumor with variable malignant potential. Metastasis has been reported in a small percentage of cases. We describe the case of a 52-year-old woman who developed a large facial tumor 1 year after she had undergone a mastectomy for a rapidly enlarging breast neoplasm. The facial lesion was found to be a malignant cystosarcoma phyllodes metastatic to the mandible, and the patient died shortly after diagnosis. To our knowledge, this patient represents only the third reported case of a phyllodes tumor metastatic to the mandible.