Magnetic resonance imaging and diffusion tensor analysis of lymphomatoid granulomatosis of the brain.
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.
Kiryu
S
S
Department of Radiology, Institute of Medical Science, University of Tokyo, Tokyo, Japan. kiryu-tky@umin.ac.jp
Okubo
T
T
Takeuchi
K
K
Inoue
Y
Y
Endo
T
T
Odawara
T
T
Nakamura
T
T
Aoki
S
S
Ohtomo
K
K
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