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What is Which of the following tumors is not derived from meninges - and explain in detail?
Meningeal tumors

Meningothelial tumor : Meningioma (most common meningeal tumor).
Mesenchymal non-meningothelial tumors : Meningeal solitary fibrous tumor, hemangiopericytoma, meningeal sarcoma, fibrous histiocytoma, meningeal melanocytoma, (melanocytic tumor)