Crush cytology of microcystic meningioma with extensive sclerosis.

Abstract

Microcystic meningioma is an unusual type of meningioma that has been described under various names including humid, myxomatous, vacuolated, or arachnoid trabecular cell meningioma.1 Histologically, microcystic meningiomas are characterized by numerous cystic spaces filled with edematous fluid and intermixed meningothelial cells of stellate or spider shape. Cytological descriptions of microcystic meningioma have been limited.2,3