title: Solitary fibrous tumor in the mental region.
abstract: Solitary fibrous tumor (SFT) is a rare, benign, soft tissue tumor that most commonly occurs in the pleura; however, it has recently been described in other sites of the body. To date, eight examples of oral SFT have been reported. This paper is a description of the first case of an SFT occurring as a soft tissue tumor in the mental region. Histologically, the tumor was composed predominantly of rather uniform spindle-shaped fibroblastic cells arranged in vague fascicles or in a haphazard fashion, intermingled with abundant collagen fibers. Immunohistochemically, the tumor cells were positive for CD34 and vimentin, and weakly positive for muscle actin and alpha-smooth muscle actin. The diagnosis of SFT may be difficult as this tumor shares a number of histological features with other soft tissue tumors. Awareness of its occurrence in the oral cavity is important so that confusion with other spindle cell neoplasms can be avoided.
authors.affiliation: Department of Oral Pathology, Kagoshima University Dental School, Sakuraoka, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Hirano
authors.forename: J
authors.initials: J
authors.lastname: Tanuma
authors.forename: T
authors.initials: T
authors.lastname: Shimoda
authors.forename: K
authors.initials: K
authors.lastname: Sugihara
authors.forename: M
authors.initials: M
authors.lastname: Tsuneyoshi
authors.forename: M
authors.initials: M
authors.lastname: Kitano
mesh_terms: D000199:Actins / Q000032:analysis; D018952:Antigens, CD34 / Q000032:analysis; D014408:Biomarkers, Tumor; D002680:Chin / Q000473:pathology; D005153:Facial Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008875:Middle Aged; D018218:Neoplasms, Fibrous Tissue / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000737:chemistry / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome; D014746:Vimentin / Q000032:analysis
chemical_list: D000199:Actins; D018952:Antigens, CD34; D014408:Biomarkers, Tumor; D014746:Vimentin