title: Parasellar dermoid tumor with intra-tumoral hemorrhage.
abstract: We report a case of parasellar dermoid tumor with intra-tumoral hemorrhage. It is rare for a dermoid tumor that hemorrhage was detected as high attenuation on the initial CT. In the present case, the tumor content included a little fat component and mostly cholesterin-rich fluid which resulted in extremely low signal intensity on T2-weighted and high signal on T1-weighted MR images. In addition to this, hemosiderin accumulation in the tumor could be the reason for low signal intensity on T2-weighted images.
authors.affiliation: Department of Radiology I, Tokai University School of Medicine, Kanagawa, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Mamata
authors.forename: M
authors.initials: M
authors.lastname: Matsumae
authors.forename: N
authors.initials: N
authors.lastname: Yanagimachi
authors.forename: S
authors.initials: S
authors.lastname: Matsuyama
authors.forename: Y
authors.initials: Y
authors.lastname: Takamiya
authors.forename: R
authors.initials: R
authors.lastname: Tsugane
mesh_terms: D000273:Adipose Tissue / Q000000981:diagnostic imaging / Q000473:pathology; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D002543:Cerebral Hemorrhage / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D002784:Cholesterol / Q000032:analysis; D003884:Dermoid Cyst / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D005355:Fibrosis; D006485:Hemosiderin / Q000032:analysis; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009336:Necrosis; D012658:Sella Turcica; D014057:Tomography, X-Ray Computed
chemical_list: D006485:Hemosiderin; D002784:Cholesterol