title: Low-Grade Oligodendroglioma of the Pineal Region: Case Report.
abstract: Background Although germ cell tumors and pineal cell tumors account for most of the histologic tumor subtypes, > 17 different tumors can arise in this location. We report a rare case of a low-grade oligodendroglioma that arose in the pineal region. Clinical Presentation A young woman complaining of a headache underwent magnetic resonance imaging that showed a mass in the pineal region and mild hydrocephalus. A ventriculoperitoneal shunt was performed followed by a near-total tumor removal, due to tumor invasion of the tectal plate and thalamus. The histologic examination confirmed the diagnosis of a low-grade oligodendroglioma. The patient then underwent chemotherapy and radiotherapy as adjuvant therapies. Conclusion Although the pineal region is a common place for a large number of tumoral lesions, low-grade oligodendrogliomas are extremely rare in this location. This case is only the second account of a benign oligodendroglioma of the pineal region reported in the literature.
authors.affiliation: Department of Neurosurgery, Federal University of São Paulo, São Paulo, Brazil ; Both authors contributed equally to this work.
authors.forename: Fabricio Correa
authors.initials: FC
authors.lastname: Lamis
authors.affiliation: Department of Neurosurgery, Federal University of São Paulo, São Paulo, Brazil ; Both authors contributed equally to this work.
authors.forename: Manoel Antonio
authors.initials: MA
authors.lastname: de Paiva Neto
authors.affiliation: Department of Pathology, Federal University of São Paulo, São Paulo, Brazil.
authors.forename: João Norberto
authors.initials: JN
authors.lastname: Stavale
authors.affiliation: Department of Neurosurgery, Federal University of São Paulo, São Paulo, Brazil.
authors.forename: Sergio
authors.initials: S
authors.lastname: Cavalheiro
keywords: oligodendroglioma; pineal gland; pineal region; tectal plate