RESUMO
Myofibroblasts have been implicated in most fibro-contractive diseases and even in developing and specialized normal body tissues. Myofibroma denotes benign neoplasms composed of contractile myoid cells arranged around thin-walled blood vessels affecting the soft tissue, bone, or internal organs at all ages with the intraosseous variant being an uncommon entity. Histologically, these tumors are characterized by being circumscribed masses of spindle cells, which may lead to confusion in diagnosis with more aggressive soft tissue spindle cell tumors. A case is reported of a 7-year-old female patient who presented with a solitary intraosseous myofibroma in the inferolateral aspect of the left orbit. This article describes the clinical, radiographic, histopathologic, and immunohistochemical features of an intraosseous myofibroma in a female child.