• Ramesh S Doddamani, Rajesh K Meena, Murli M Selvam, Neelam K Venkataramanaa, Madhvi Tophkhane, and Sharat K Garg.
• Department of Neurosurgery, All India Institute of Medical Sciences (AIIMS), New Delhi, India. Electronic address: drsdramesh@gmail.com.
• World Neurosurg. 2016 Jun 1; 90: 707.e5-707.e12.

ObjectiveGliosarcomas are rare, extremely high-grade, bimorphous malignant tumors of the central nervous system. Intraventricular location is extremely rare, and only a few case reports exist in the literature. The aim of our study is to review clinical, radiologic, and pathologic features of this unique oncological entity and report this rare case of primary cystic intraventricular gliosarcoma (IVGS) with a mural nodule.MethodsA 23-year-old man had a 6-month history of headache and a single episode of generalized seizure. Examination revealed grade 1 papilledema. Brain magnetic resonance imaging revealed a cystic lesion with a mural nodule located within the occipital horn of the right lateral ventricle, which exhibited an intense enhancement of the nodule with patchy rim enhancement of the wall on gadolinium administration. The patient underwent right parietal craniotomy and gross total excision of the tumor.ResultsPostoperative computed tomography of the brain showed evidence of complete tumor excision. The postoperative course of the patient was uneventful. Histopathologic analysis revealed malignant tumor comprising both glial and mesenchymal components suggestive of gliosarcoma.ConclusionPrimary IVGS is an extremely rare malignancy, with only 9 cases reported in the literature, and it should be considered in the differential diagnosis of lateral ventricular tumors.Copyright © 2016 Elsevier Inc. All rights reserved.

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