title: Magnetic resonance imaging and diffusion tensor analysis of lymphomatoid granulomatosis of the brain.
abstract: We present the case of a 56-year-old man suffering from acquired immune deficiency syndrome associated with lymphomatoid granulomatosis. Magnetic resonance imaging performed because of convulsions revealed an ill-defined frontal mass showing hypointense on T1WI and slightly hypointense on T2WI with surrounding edema. An elevated uptake was found on T1-201 single photo emission computed tomography consistent with a central nervous system lymphoma. However, the apparent diffusion coefficient ratio calculated from diffusion-tensor acquisitions was 1.53 and was higher than that of lymphomas in previous reports. Stereotactic brain biopsy was performed and lymphomatoid granulomatosis was confirmed.
authors.affiliation: Department of Radiology, Institute of Medical Science, University of Tokyo, Tokyo, Japan. kiryu-tky@umin.ac.jp
authors.forename: S
authors.initials: S
authors.lastname: Kiryu
authors.forename: T
authors.initials: T
authors.lastname: Okubo
authors.forename: K
authors.initials: K
authors.lastname: Takeuchi
authors.forename: Y
authors.initials: Y
authors.lastname: Inoue
authors.forename: T
authors.initials: T
authors.lastname: Endo
authors.forename: T
authors.initials: T
authors.lastname: Odawara
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: S
authors.initials: S
authors.lastname: Aoki
authors.forename: K
authors.initials: K
authors.lastname: Ohtomo
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000150:complications; D001932:Brain Neoplasms / Q000175:diagnosis*; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D006801:Humans; D008230:Lymphomatoid Granulomatosis / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged