1. Myofibroma is an uncommon neoplasm characterized by myofibroblastic proliferation.

2. Solitary form myofibroma and multiple form myofibromatosis possess the same clinical and histopathological features.

3. In this article, a case of myofibroma of the mandible of a 10-year-old Taiwanese girl is reported.

4. Myofibroma is a heterogenous disorder characterized by the proliferation of fibroblasts, myofibroblasts, or both.

5. The present work suggested that the mechanism of the action of "861 Xiao Liu Pian" might probably be the regulation of endocrine function and the suppression of ER level in myofibroma tissues.