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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 26:1873-1875, August 2005
© 2005 American Society of Neuroradiology

Case Report
HEAD AND NECK

Transalar Encephalocele Associated with Wegener Granulomatosis and Meningeal Enhancement: Case Report

James Short^a, Alexander M. McKinney^a, Leandro T. Lucato^a, Mehmet Teksam^a and Charles L. Truwit^a

^a From the Department of Radiology, University of Minnesota Medical School, and the Hennepin County Medical Center, Minneapolis, MN

Address correspondence to Alexander McKinney, MD, Department of Radiology, Hennepin County Medical Center, 701 Park Avenue South, Minneapolis, MN 55415

Summary: Transalar encephaloceles are rare lesions that do not fit the standard classification of basal encephaloceles. Typically, these lesions present in adulthood, with nonspecific symptoms. We report here a case of a patient with Wegener disease in whom a large transalar encephalocele posterior to the sinus was noted when he was preoperative for left maxillary sinus surgery. The encephalocele demonstrated irregular peripheral enhancement along the margin—a very uncommon finding—as well as contrast enhancement of the basal meninges, which can be seen occasionally with Wegener granulomatosis.