266 High-Grade Glioma Arising in an Ovarian Immature Teratoma

Ganglioneuroblastoma arising in a Mature Cystic Teratoma of Ovary: Report and Literature review of an uncommon neoplasm

“…High-grade gliomas of the ovary are extremely rare neoplasms as well, with only seventeen reported cases in English literature. In presented cases, the biological behavior ranged from no recurrences after a long follow-up in a stage IA, surgically managed tumor ( den Boon et al, 1999 ) to need for aggressive chemotherapy in conventionally high stage or ruptured tumors ( Kim et al, 2018 ) . Ependymoma of the ovary can be identified by the presence of true-rosettes and expression of GFAP, and in the published cases had a good prognosis, even in the tumors with a high stage at presentation ( Garcia-Barriola et al, 2000 ) .…”

“…Histopathological differential diagnoses for gangliocytic tumors within the ovary, include immature teratoma, glial neoplasms, such as glioblastoma multiforme ( Kim et al, 2018 ), and ependymoma ( Garcia-Barriola et al, 2000 ) , and mature non-neoplastic glial and cerebellar elements ( Ishida et al, 2014 ) .…”