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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 26:2667-2670, November-December 2005
© 2005 American Society of Neuroradiology

Case Report
SPINE

Inflammatory Pseudotumor in the Epidural Space of the Thoracic Spine: A Case Report and Literature Review of MR Imaging Findings

Ho Jun Seol^a,d, Sam Soo Kim^a,d, Ji Eun Kim^b, Sang Hyung Lee^c and Jun Yeon Won^a,d

^a Department of Neurosurgery, Kangwon National University College of Medicine, Chuncheon, Korea
^b Departments of Pathology, Seoul Municipal Boramae Hospital, Seoul, Korea
^c Departments of Neurosurgery, Chuncheon, Korea
^d Neuroscience Research Institute, Kangwon National University College of Medicine, Chuncheon, Korea

Address correspondence to Sam Soo Kim, MD, Department of Radiology, Neuroradiology, Kangwon National University Hospital, 17-1 Hyoja 3-dong, Chuncheon 200-947, Republic of Korea

Summary: We present a rare case of pathologically proven inflammatory pseudotumor in the thoracic spine. The lesion showed an isointense signal on T1-weighted images, a heterogeneous iso- and hyperintense signal on T2-weighted images, and strong homogeneous enhancement. There was no evidence of abnormalities in the adjacent bone. Whereas the exact pathogenesis of this lesion is unknown, it has been regarded as an unusual response to insults such as trauma or acute infection, a postinflammatory reparative process, or low-grade malignancy.

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