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Glossopharyngeal nerve schwannoma

Case contributed by Nafisa Shakir Batta
Diagnosis almost certain

Presentation

Speech difficulty, admitted with fever of unknown origin.

Patient Data

Age: 70 years
Gender: Male

An isodense lesion is seen at left cerebellopontine angle and left perimedullary cistern. Concurrent global cortical atrophy is also seen.

A homogenous and avidly enhancing lesion is seen at left perimedullary cistern extending into the pars nervosa of jugular foramen and mildly expanding it, the intracanalicular extent is giving an icecream cone appearance. The pars nervosa of the left jugular foramen is normal. The internal auditory meatus and 7th-8th nerve complex is normal.

Few scattered chronic ischemic changes with parenchymal atrophy are also observed

Case Discussion

Findings are compatible with glossopharyngeal nerve ( CN IX) schwannoma

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