title: Juvenile psammomatoid ossifying fibroma with visual disturbance: a case report with imaging features.
abstract: Juvenile psammomatoid ossifying fibroma (JPOF) of the sphenoid sinus is a rare subtype of ossifying fibroma of the sinonasal cavity and facial bone in young adults. Computed tomographic (CT) and magnetic resonance (MR) imaging features of JPOF have been reported, but to our knowledge, positron emission tomography (PET) findings have not been described. We present a 19-year-old woman with right visual disturbance whom we diagnosed with JPOF and describe imaging findings in her case. CT revealed a well-circumscribed fibro-osseous mass surrounding the right optic canal, with expansile, mixed soft tissue and thick bone density. MR imaging showed low signal intensity in the mass on both T(1)- and T(2)-weighted images. [(18)F]fluorodeoxyglucose ([(18)F]FDG) and [(11)C]methyl-L-methionine ([(11)C]Met) PET/CT showed abnormal uptake in the lesion, with standardized uptake values (SUV) of 6.2 ([(18)F]FDG) and 4.6 ([(11)C]Met). Familiarity with the imaging features of this rare disease aids its differentiation from other more familiar lesions to permit appropriately aggressive therapy and improve prognosis.
authors.affiliation: Department of Diagnostic Radiology, Saitama Medical University International Medical Center, Saitama, Japan. s rekdo@saitama-med.ac.jp
authors.forename: Reiko
authors.initials: R
authors.lastname: Nakajima
authors.forename: Naoko
authors.initials: N
authors.lastname: Saito
authors.forename: Akira
authors.initials: A
authors.lastname: Uchino
authors.forename: Ichiei
authors.initials: I
authors.lastname: Kuji
authors.forename: Tomonari
authors.initials: T
authors.lastname: Suzuki
authors.forename: Ryo
authors.initials: R
authors.lastname: Nishikawa
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Yamaguchi
authors.forename: Fumiko
authors.initials: F
authors.lastname: Kimura
mesh_terms: D001859:Bone Neoplasms / Q000150:complications* / Q000175:diagnosis*; D005260:Female; D018214:Fibroma, Ossifying / Q000150:complications* / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D064847:Multimodal Imaging / Q000379:methods; D010255:Paranasal Sinus Neoplasms / Q000150:complications* / Q000175:diagnosis*; D014786:Vision Disorders / Q000175:diagnosis / Q000209:etiology*; D055815:Young Adult