[A benign growth that originates from the arachnoidal cap cells or the meningothelial cells, rarely invading brain parenchyma. The usual form of treatment is attempted gross total neurosurgical resection. These tumors tend to recur if incompletely excised (Kaye AH, Laws ER Brain Tumors Churchill Livingstone 1995) ( NCI )]
UMLS (NCI) C0281784