title: CT and MRI findings of xanthoma in the orbitofrontal region.
abstract: We report the imaging features of a rare case of xanthoma in the floor of the anterior cranial fossa involving the frontal bone and orbit. A 42-year-old man presented with a history of proptosis, headache, and hyperlipidemia. Computed tomography demonstrated a well-circumscribed, homogenous, expansive mass with isodensity to brain parenchyma. On magnetic resonance imaging, the tumor showed high signal intensity relative to brain white matter on T1-weighted images, with heterogeneously high signal intensity on T2-weighted images. Histological examination established a diagnosis of xanthoma.
authors.affiliation: Department of Radiology, Kanazawa Medical University, Daigaku 1-1, Uchinada, Kahoku, Ishikawa 920-0293, Japan.
authors.forename: Munetaka
authors.initials: M
authors.lastname: Matoba
authors.forename: Hisao
authors.initials: H
authors.lastname: Tonami
authors.forename: Masaaki
authors.initials: M
authors.lastname: Kuginuki
authors.forename: Itaru
authors.initials: I
authors.lastname: Yamamoto
authors.forename: Takuya
authors.initials: T
authors.lastname: Akai
authors.forename: Hideaki
authors.initials: H
authors.lastname: Iizuka
mesh_terms: D000328:Adult; D001847:Bone Diseases / Q000175:diagnosis*; D005624:Frontal Bone / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009915:Orbit / Q000473:pathology; D009916:Orbital Diseases / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed; D014973:Xanthomatosis / Q000175:diagnosis*