clear cell meningioma
An uncommon atypical–WHO grade 2–meningioma which usually affects younger females and is often located infratentorially–e.g., at the cerebellopontine angle and cauda equina
Differential diagnosis Renal cell carcinoma.
Imaging–MRI Findings of typical meningioma, accompanied by leptomeningeal enhancement
Management Surgical excision
Prognosis 60% of clear cell meningiomas recur
Micro Whorled, syncytial architecture, spindled-to-polygonal, bland-appearing nuclei and vacuolated, glycogen-rich cytoplasm. Stromal and perivascular hyalinization may result in extensive areas of fibrosis in older tumors; mitoses are rare.
Synonym Glycogen-rich meningioma