Atypical Myofibroblastic Tumor of the Oral Cavity in a Child.

A myofibroma is a relatively rare neoplasm characterized by its spindle cell proliferation. This lesion can present as a unifocal mass (myofibroma) or multifocal growths (myofibromatosis) in the skin, soft tissue, bone, or internal organs. In the oral cavity, the tumor is commonly identified on the tongue, mucosa, lips, and mandible.