A 21-year-old female with a third ventricular tumor.

Brain Pathology
A Martina Messing-JüngerGuido Reifenberger

Abstract

A 21-year-old female presented with a 2-months history of tinnitus, vertigo and nausea. On magnetic resonance imaging of the brain, she demonstrated a small contrast-enhancing mass in the posterior part of the third ventricle. Intraoperatively, the tumor showed a close relationship to the choroid plexus of the third ventricle. Histopathology revealed a benign schwannoma of World Health Organization grade I. To our knowledge, only 9 cases of intraventricular Schwann cell tumors have been published so far. Most of these tumors were benign schwannomas, except for 2 cases of malignant peripheral nerve sheath tumors. The tumor of our patient is the first reported schwannoma of the third ventricle. The origin of intraventricular Schwann cell tumors is unknown. They may arise from autonomic perivascular nerves in the choroid plexus or from ectopic neural crest-derived cells. Histologically, intraventricular schwannoma needs to be distinguished from other spindle cell tumors, in particular pilocytic astrocytoma and fibroblastic meningioma.

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Citations

Jul 25, 2013·British Journal of Neurosurgery·Jose Luis SanmillánJuan José Acebes
Jan 18, 2018·Translational Neuroscience·Zbigniew KotwicaPiotr Kasprzak
Jun 18, 2020·Surgical Neurology International·Daisuke WajimaTaiji Yonezawa
Mar 20, 2014·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Sui-To WongDachling Pang
Jan 5, 2008·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·William J BenedictVikram C Prabhu
Jan 8, 2016·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Hesam AbdolhosseinpourRichard Shane Tubbs
Jan 14, 2010·Arquivos de neuro-psiquiatria·Lucas Perez de VasconcellosCarmen Lúcia Penteado Lancellotti
Nov 26, 2020·Acta neurologica Belgica·Xianwang LiuJunlin Zhou

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