A mucosubstance-rich myxoid meningioma that recurred twice is reported. This rare form of meningioma is a potential source of confusion with other myxoid neoplasms such as metastatic adenocarcinoma or chordoma. In addition to the usual stigmata of meningial cell differentiation, ultrastructural examination revealed spaces delineated by a network of cellular processes and enclosing loose granular and fibrillar material. This neoplasm is probably linked to the so-called microcystic meningioma but has an overt production of acid mucosubstance.
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Louis R. Bégin (1990) studied this question.
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