[A WHO grade I large cystic tumor that occurs almost exclusively in infants, with a prominent desmoplastic stroma having a neuroepithelial population mainly of neoplastic astrocytes. It involves the superficial cerebral cortex and leptomeninges, and often attach to the dura. Although clinically it presents as large tumor, it generally has a good prognosis following surgical resection. (Adapted from WHO 2000.) ( NCI )]
UMLS (NCI) C0457179