Ovarian ependymomas of extra-axial type or central immunophenotypes

Treatment of Ovarian Anaplastic Ependymoma by an Aromatase Inhibitor

“…2-7 A recent review identified five cases of ovarian and broad-ligament extraaxial ependymomas. 5 Diagnosis of genital tract extraaxial ependymomas The manuscript was edited by Ms. Felicity Neilson, whose services were paid for by Pr. Bruno Deval (first author).…”

Primary pure ependymoma: a rare entity of the ovary

“…Reported cases of ovarian ependymomas in the literature have been shown in Table 1. Microscopically ovarian ependymomas can be found in cellular, papillary, myxopapillary or mixed patterns [2][3][4][5][6]. Perivascular pseudorosettes can be seen as well as ependymal rosettes.…”

“…Ependymomas are an infrequent glial tumors that usually originate from the central nervous system, but they can occasionally occur in various extra-axial regions [1,2]. Pure ovarian ependymoma, classified as differentiated glioma, was first described by Kleinman et al in 1984 [3] and only a few cases have been reported since then.…”

Low-Grade Astrocytoma Arising in a Mature Ovarian Teratoma in an Adolescent

“…To the authors' knowledge, 43 cases of different types and grades have been reported so far. 1,2,[5][6][7][8][9][10][11][12][13][14][15][16][17][18] Although some cases of ovarian gliomas such as ependymomas were reported to be in the form of monodermal teratomas, the remaining cases of gliomas were reported to arise on a background of ovarian teratoma of either the mature or immature types. Astrocytomas of different grades make up the majority of gliomas.…”

“…Of the remaining gliomas, 1 was a pilocytic astrocytoma, 7 9 were oligodendrogliomas, [8][9][10][11] and 16 were ependymomas, [12][13][14][15][16][17][18] of which 1 was of the myxopapillary type. 12 Of these gliomas, 21 cases (11 glioblastomas, 4 oligodendrogliomas, 1 pilocytic astrocytoma, 4 low-grade fibrillary astrocytomas, and 1 myxopapillary ependymoma) were reported to arise from mature cystic teratomas. Seven cases were reported to arise on a background of immature teratomas (2 glioblastomas and 5 oligodendrogliomas).…”