Studies on mucous substances in myxomatous meningiomas

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Abstract
Summary Three cases of myxomatous meningiomas with unusually abundant myxopoiesis are reported. Histochemical and staining methods are applied to characterize the mucous substances. They are identified as a complex of neutral and acid mucopolysaccharides with a protein component. Histochemical and histological findings are correlated. The question is discussed whether an excessive myxopoiesis of meningioma cells represents regressive changes or specialized cellular activity.