title: Solitary myofibroma of the mandible in an adult with magnetic resonance imaging and positron emission tomography findings: a case report.
abstract: Myofibroma is a benign tumor composed of myoid spindle cells. The prevalence of myofibroma in the oral cavity is very low, with the mandible being the most common site. This report describes an adult case of myofibroma that arose on the mandible and includes magnetic resonance imaging (MRI) and positron emission tomography (PET) findings. On the MRI T1-weighted images, the tumor appeared with signal iso-intensity and was highly and heterogeneously enhanced with contrast material. On the T2-weighted images, it appeared with increased signal intensity. 18 F-fluorodeoxyglucose (FDG)-PET imaging showed abnormal strong accumulation of FDG in the left mandibular region. The tumor was removed by marginal resection of the left mandible under general anesthesia. Histopathological findings revealed that the tumor stroma contained abundant thin-walled vessels. The postoperative course was uneventful, and we found no evidence of recurrence at the postoperative 34-month follow-up.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Tanaka
authors.affiliation: Department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Japan. yamada-hi@tsurumi-u.ac.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Yamada
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Saito
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Nakaoka
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kumagai
authors.forename: Hisako
authors.initials: H
authors.lastname: Fujihara
authors.forename: Kenji
authors.initials: K
authors.lastname: Mishima
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Hamada
mesh_terms: D019788:Fluorodeoxyglucose F18; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008339:Mandibular Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008875:Middle Aged; D047708:Myofibroma / Q000175:diagnosis* / Q000601:surgery; D049268:Positron-Emission Tomography / Q000379:methods*; D011379:Prognosis; D019275:Radiopharmaceuticals
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18