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Published on: January 17, 2018
Intracranial inflammatory pseudotumor
J E Sitton1, J C Harkin, M A Gerber
1Department of Pathology, Tulane University School of Medicine, New Orleans, Louisiana 70112.
Abstract:
An intracranial mass thought clinically and by computed tomography and angiography to be a meningioma proved to be an inflammatory pseudotumor. The lesion was composed of sheets of mature plasma cells and lymphocytes with germinal center formation. Immunohistochemical studies revealed a polyclonal cell population, supporting a diagnosis of a reactive lesion rather than a plasma cell neoplasm. Inflammatory pseudotumor should be considered in the differential diagnosis of a sharply demarcated intracranial mass clinically and radiologically diagnosed as meningioma.
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