| umls-concept:C1519086 | skos:definition | NCI: A recently described astrocytic tumor of uncertain relation to pilocytic astrocytoma. It occurs predominantly in infants and young children. It is characterized by a monomorphic architectural pattern, usually associated with the absence of Rosenthal fibers and eosinophilic granular bodies. The clinical course is usually aggressive -- 2004 | lld:umls |
