Perichiasmatic granuloma occuring after radical mastoidectomy: MR findings.

Eur Radiol

Hôpital Saint-Antoine, Service de Radiologie, 184 rue du Faubourg Saint-Antoine, F-75012 Paris, France.

Published: April 1998

A case of chronic chemical meningitis occurring after a radical mastoidectomy is reported. Imaging and surgical findings were suggestive of a dissemination of cholesteatoma debris within the subarachnoid spaces. Chemical meningitis has been described in epidermoid and dermoid cyst rupture. This report illustrates that clinicians should be aware of this possible complication. Skull base imaging is mandatory before considering the diagnosis of idiopathic meningitis. Only treatment of the abnormal communication between cerebrospinal fluid and middle ear may eradicate the origin of this rare meningitis.

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http://dx.doi.org/10.1007/s003300050381DOI Listing

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