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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 24:1136-1138, June-July 2003
© 2003 American Society of Neuroradiology

Case Report
HEAD AND NECK

Giant Cell Reparative Granuloma of the Temporal Bone: MR Findings with Pathologic Correlation

Hyun Jeong Kim^a, Ho Kyu Lee^a, Dae Chul Suh^a, Choong Gon Choi^a, Jae Kyun Kim^a, Jeong Hyun Lee^a and Kyung Ja Cho^b

^a Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
^b Department of Diagnostic Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea

Address reprint requests to Ho Kyu Lee, M.D., Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 388–1 Poongnap-dong, Songpa-gu, Seoul 138–736, South Korea

Summary: We report MR findings in a case of a giant cell reparative granuloma involving the temporal lobe in a middle-aged man. On MR images, most of the mass was hypointense on T1-weighted images, hypointense on T2-weighted images, and mildly enhanced on postcontrast T1-weighted images. The hypointensity on T2-weighted images corresponded to areas of hemorrhage and hemosiderin deposition on pathologic correlation.