title: [Unusual CT and MRI appearance of the epidermoid tumor--a case report].
abstract: We reported a case of epidermoid tumor with unusual findings on CT and MRI. A 41-year old woman was admitted because of headache. On admission she had no neurological deficits. CT revealed a lobular homogenous high-dense mass with a sharp margin in the mid-portion of the posterior fossa. The mass was shown as a low signal intensity on both T1- and T2-weighted MRI. An encapsulated mass containing "motor oil" like viscid fluid was removed by surgical operation. Histological examination revealed epidermoid cyst. CT-dense epidermoid tumor was discussed with referring to the literature.
authors: Department of Neurology Ohji-Seikyo Hospital, Tokyo, Japan.
authors: K
authors: K
authors: Miyagi
authors: T
authors: T
authors: Imaizumi
authors: H
authors: H
authors: Yamanouchi
authors: H
authors: H
authors: Hayashi
authors: S
authors: S
authors: Kobayashi
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis*; D004814:Epidermal Cyst / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D014057:Tomography, X-Ray Computed