Embryonal Tumor with Multilayered Rosettes, C19MC-Altered

**Semantic type:** Neoplastic Process

**Definition:** An aggressive embryonal tumor with multilayered rosettes characterized by the presence of amplification of the C19MC region on chromosome 19 (19q13.42).

**Synonyms:** - ETMR, C19MC-Altered - Embryonal Tumor with Abundant Neuropil and True Rosettes - Embryonal Tumor with Multilayered Rosettes - Embryonal Tumor with Multilayered Rosettes with C19MC Amplification - Embryonal tumor with multilayered rosettes C19MC-altered - Ependymoblastoma - Ependymoblastoma