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Lateral ventricle subependymoma resected with a transcallosal approach: illustrative case

Franco Rubino, Michael P. Catalino, Romulo A. Andrade de Almeida, and Sujit S. Prabhu

characteristics of the tumor infiltrating the ependyma over the basal ganglia or fornix and the continuous use of brain retractors to reach the lateral ventricle. 7 , 8 Conversely, the highest rates of severe postoperative complications have been reported in subependymomas located in the posterior fossa. 6 , 9 In this report, we present the case of a 65-year-old male with a subependymoma located in the left lateral ventricle. The tumor was completely resected using an interhemispheric transcallosal approach. Illustrative Case History and Presentation A 65-year

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Bilateral frontal intracranial xanthoma associated with type II hyperlipidemia in a 42-year-old woman: illustrative case

Donny Argie, Christopher Lauren, and Elric B. Malelak

heterogeneous signal intensity in the frontal lobe of both hemispheres, especially on the right side ( Fig. 1A–D ). The mass consisted primarily of a cystic component with some vascularized and necrotic area, surrounded by edema. There was no significant enhancement with intravenous contrast administration. Multiple small cystic components extended between the fornix and corpus callosum ( Fig. 1C and D ). Based on characteristics of MRI, we suspected a malignant glioma, oligodendroglioma, lymphoma, or other intraaxial lesion as the primary differential diagnoses. We performed

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Malignant transformation of central neurocytoma with dissemination 17 years after initial treatment: illustrative case

Kazuhiro Kojima, Yoshiki Arakawa, Yasuhide Takeuchi, Yukinori Terada, Masahiro Tanji, Yohei Mineharu, Hironori Haga, and Susumu Miyamoto

stereotactic radiosurgery has favorable local control in small lesions. 10 , 11 Recurrences of central neurocytomas are usually local. We reviewed 16 patients with central neurocytomas that recurred with dissemination ( Table 1 ). 10 , 12–24 The mean age of onset was 30.6 years (range 3–56 years). Of the 16 cases, 10 were men and 6 were women. The primary tumors arose from the subarachnoid space (n = 1), septum pellucidum (n = 3), fornix, or walls of the ventricles (lateral ventricles: n = 10; third ventricles: n = 2). The initial Ki-67 labeling index was available in 11

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First documented case of intracranial falcine malignant peripheral nerve sheath tumor: illustrative case

Renato J. Galzio, Mattia Del Maestro, Diamantoula Pagkou, Massimo Caulo, Sofia Asioli, Alberto Righi, Viscardo Paolo Fabbri, and Sabino Luzzi

-channel head coil. The patient received plain and contrast-enhanced standard MR sequences, dynamic susceptibility contrast-enhanced perfusion MRI, and multivoxel MR spectroscopy. A large, almost ovoidal (maximal diameters: sagittal, 59 mm; axial, 52 mm; and coronal, 45 mm) significantly heterogenous space-occupying lesion was observed in the right/left paramedian area posterior to the fornix just above the pineal region. The tumor developed in the right lateral ventricle, contralaterally shifting the septum pellucidum, bulging superiorly at the posterior third of the

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Diffusely invasive supratentorial rosette-forming glioneuronal tumor: illustrative case

Brittany Owusu-Adjei, Constance J Mietus, Jeewoo Chelsea Lim, William Lambert, Rrita Daci, David Cachia, Thomas W Smith, and Peter S Amenta

cerebral peduncles and midbrain. The patient initially underwent a right frontal craniotomy, septostomy, biopsy, and placement of an external ventricular drain ( Fig. 2 ). Prior to disturbing the tumor, cerebrospinal fluid (CSF) was collected for cytology. The exophytic nonenhancing right frontal horn lesion was resected in its entirety ( Fig. 2B ). The enhancing third-ventricular lesion was identified filling the right foramen of Monro and merging with the right fornix. The appearance was consistent with that of the floor of the third ventricle

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The infundibulochiasmatic angle and the favorability of an endoscopic endonasal approach in type IV craniopharyngioma: illustrative case

Guilherme Finger, Maria Jose C Ruiz, Eman H Salem, Matthew D Marquardt, Kyle C Wu, Lucas P Carlstrom, Ricardo L Carrau, Luciano M Prevedello, and Daniel M Prevedello

significant experience with the EEA and work within a multidisciplinary team familiar with the anatomy of the suprasellar region and third ventricle to safely perform this approach ( Fig. 5 ). The floor of the third ventricle extends from the optic chiasm anteriorly to the sylvian aqueduct posteriorly. The anterior wall of the third ventricle is formed by the anterior column of the fornix, anterior commissure, and lamina terminalis. 6 This approach is adjacent to many important structures, including the optic chiasm, infundibulum, tuber cinereum, mammillary bodies