Transalar encephalocele associated with Wegener granulomatosis and meningeal enhancement: case report
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Updated: Aug 16, 2026

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Published on: May 26, 2023
James Short1, Alexander M McKinney, Leandro T Lucato
1Department of Radiology, University of Minnesota Medical School, and the Hennepin County Medical Center, Minneapolis, MN 55415, USA.
Abstract:
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.
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