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Uncommon type of meningiomas with conspicuous plasmo-lymphocytic infiltration. An immunohistochemical and
1Second Department of Pathology, Ehime University School of Medicine, Japan.
Acta Pathologica Japonica
|March 1, 1989
Abstract:
Two cases of meningioma revealing conspicuous plasmo-lymphocytic tissue and hyalinized fibrous tissue components are reported. Histopathological examination of the plasmo-lymphocytic infiltration was performed. Both lesions showed polyclonality of plasma cells as revealed by positive reactions for IgG and paraimmunoglobulin kappa- and lambda-light chains, and amyloid infiltration into the fibrous stroma and blood vessel walls. The histochemical and immunohistochemical characteristics of the lesion in relation to its etiology are briefly discussed.