Central Nervous System Tumor with BCOR Internal Tandem Duplication

**Semantic type:** Neoplastic Process

**Definition:** A rare central nervous system embryonal tumor characterized by the presence of uniform oval or spindle-shaped cells with round or oval nuclei, pseudorosette formation, and heterozygous internal tandem duplication in exon 15 of the BCOR gene.

**Synonyms:** - CNS Tumor with BCOR Internal Tandem Duplication