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American Journal of Neuroradiology 24:1110-1113, June-July 2003
© 2003 American Society of Neuroradiology

Case Report
BRAIN

Diffusion-Weighted Imaging of Cerebritis

Glenn A. Tung^a and Jeffrey M. Rogg^a

^a From the Department of Diagnostic Imaging, Brown University School of Medicine, Rhode Island Hospital, Providence, RI

Address correspondence to Glenn A. Tung, MD, FACR, Department of Diagnostic Imaging, Brown University School of Medicine, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903

Summary: Restricted water diffusion has been used to distinguish pyogenic abscess from other rim-enhancing brain masses; however diffusion-weighted imaging of cerebral infection before capsule formation has rarely been described. We report a case of fungal cerebritis in which water diffusion was more restricted than that of normal contralateral brain and the measured diffusion coefficient was in the range of that reported for pyogenic brain abscess. In the proper clinical setting, cerebritis should be considered in the differential diagnosis of an ill-defined focal brain mass associated with markedly restricted water diffusion.

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