Primary Central Nervous System Germ Cell Tumors: A Review and Update

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Mahua Dey Kaleigh Fetcko


Primary central nervous system (CNS) germ cell tumors (GCT) are a heterogeneous group of tumors that are still poorly understood. In North America, GCTs comprise approximately 1% of primary brain tumors in pediatric and young adult patients. GCTs can occur as pure or mixed subtypes; they are divided into germinomas, which are the most common subtype, and non-germinomatous germ cell tumors (NGGCTs), which consist of approximately one-third of GCTs and include teratomas, embryonal carcinomas, choriocarcinomas, and yolk sac tumors. While the etiology of primary CNS GCT is not entirely clear, the various subtypes are lineage-related and may involve progenitor germ cells that fail to migrate and become trapped in midline locations. Primary CNS GCT most commonly arises in the pineal region but also occur in other areas. Presenting symptoms can include headache, Parinaud syndrome, diabetes insipidus, precosious puberty, ataxia, or hemiparesis. Treatment plans differ depending on the subtype of GCT and may vary among physicians and institutions. Germinomas have a favorable prognosis with a greater than 90% overall survival, while NGGCTs only have survival rates ranging from 40-70%. Primary CNS GCTs are rare tumors and can be hard to diagnose. Germinomas are most effectively treated with chemotherapy and radiation, while NGGCT usually require surgical resection, chemotherapy, and radiation with the exception of mature teratomas frequently curable with surgery alone.

Keywords: CNS germ cell tumor, intracranial germ cell tumor, germinomas, nongerminomas

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DEY, Mahua; FETCKO, Kaleigh. Primary Central Nervous System Germ Cell Tumors: A Review and Update. Medical Research Archives, [S.l.], v. 6, n. 3, mar. 2018. ISSN 2375-1924. Available at: <>. Date accessed: 19 july 2024. doi:
Research Articles


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