Abstract
SUMMARY: IgG4-related IPTs have been reported in various sites and may form part of the spectrum of systemic IgG4-related sclerosing disease. Some pseudotumors are clinically and radiologically indistinguishable from malignant tumors. We present the first case of an IgG4-related IPT of the trigeminal nerve diagnosed histopathologically without involvement of any of the common sites. The trigeminal nerve pseudotumor may represent a component of IgG4-related sclerosing disease.
Abbreviations
- ALK
- anaplastic lymphoma kinase
- DWI
- diffusion-weighted imaging
- HPF
- high-power field
- IgG
- immunoglobulin G
- IgG4
- immunoglobulin G4
- IMT
- Inflammatory myofibroblastic tumor
- IPT
- inflammatory pseudotumor
- © 2011 by American Journal of Neuroradiology
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