Brown tumor of the sphenoid sinus in a patient with secondary hyperparathyroidism: CT and MR imaging findings.
We present a case of brown tumor of the sphenoid sinus in a patient with secondary hyperparathyroidism. CT showed an expansile soft-tissue attenuation mass centered in the sphenoid sinus. CT at bone window setting demonstrated expansile, lytic change and remodeling of the surrounding bone. On MR imaging, the lesion showed iso-intensity to gray matter on T1-weighted images and heterogeneous hyperintensity on T2-weighted images, and showed intense enhancement. The extent of the lesion and its relationship to the surrounding structures were best evaluated by CT and MR imaging.
Department of Radiology, Teikyo University School of Medicine, Ichihara Hospital, 3426-3 Anesaki, Ichihara, Chiba 299-0111, JAPAN.
Tohru
T
Takeshita
Hiroko
H
Tanaka
Arimi
A
Harasawa
Tatsuro
T
Kaminaga
Tetsuo
T
Imamura
Shigeru
S
Furui
D016723:Bone Remodeling; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006101:Granuloma, Giant Cell / Q000209:etiology*; D006801:Humans; D006962:Hyperparathyroidism, Secondary / Q000150:complications*; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010002:Osteitis Fibrosa Cystica / Q000209:etiology*; D010254:Paranasal Sinus Diseases / Q000209:etiology*; D013101:Sphenoid Sinus / Q000473:pathology*; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D019786:Gadolinium DTPA