Pathology proved a case of cystic meningioma.

Microscopic: sections show the neoplastic cells arranged in a whorled or lobulated architecture and collagenous fibrous background (syncytial and fibrous pattern) with round to oval nuclei, dispersed chromatin, inconspicuous nucleoli, occasional pseudoinclusions, and eosinophilic cytoplasm. Scattered psammoma bodies, focal nuclear pleomorphism, and rare mitotic figures are noted.

Diagnosis: Meningioma with a mixture of syncytial and fibrous pattern (transitional variant), WHO grade 1.