Abstract
Two cases of neurinoma of the IX, X, and XIth cranial nerve are reported.Case 1 : 48 year old maleSymptoms of the VII, IX, X, and XIIth cranial nerve were evident. The tumor was observed at the hypotympanum and was confirmed to be a neurinoma as diagnosed by biopsy.Case 2; 31 year old femaleThe symptoms of the V, IX, X, XI, XIIth cranial nerve were evident.In both cases, the dilatation of the jugular foramen and the destruction of the pyramidal apex were seen. Obstruction of internal jugular vein was confirmed by retrograde-jugulanography.The symptoms of involvement of the VIIIth cranial nerve and brain stem were somewhat more apparent than in the case of the acoustic tumor.
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