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Transseptal interforniceal endoscopic removal of superiorly recessed colloid cysts

Umberto Tosi, Rafael Uribe-Cardenas, Jacques Lara-Reyna, Francis N. Villamater, Imali Perera, Philip E. Stieg, Apostolos John Tsiouris, and Mark M. Souweidane

coaxial endoscopic forceps and dissection was achieved through a combination of rotation and deliberate traction. Hemostasis was achieved via irrigation and diathermy, if needed. A final inspection was performed to assess the degree of removal and to remove any hematoma within the inferior third ventricle. FIG. 2. Intraoperative photographs of the approach to interforniceal cysts. A: Ventricular anatomy, including the septum pellucidum, fornix, and anterior (Ant.) septal vein (V.) and their relationships with the choroid plexus. B: Septum pellucidotomy is

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The role of diffusion tensor imaging and fractional anisotropy in the evaluation of patients with idiopathic normal pressure hydrocephalus: a literature review

Ioannis Siasios, Eftychia Z. Kapsalaki, Kostas N. Fountas, Aggeliki Fotiadou, Alexander Dorsch, Kunal Vakharia, John Pollina, and Vassilios Dimopoulos

ADC & FA Hattingen et al., 2010 11 w/possible/probable iNPH & 10 HCs ROI & TBSS CST & CC MD & FA Hattori et al., 2012 20 w/iNPH & 20 HCs ROI, tract-specific analysis, & TBSS CC, CST, IC, PVWM, uncinate fasciculus, & cingulum FA, ADC, & axial/radial eigenvalues Hattori et al., 2012 22 w/iNPH, 20 w/AD, & 20 HCs Tract-specific analysis Fornix FA Hattori et al., 2011 18 w/iNPH, 11 w/AD, 11 w/PDD, & 19 HCs Tract-specific analysis CST FA & axial eigenvalues Hong et al., 2010 13 w/iNPH, 15 w/AD, & 15 HCs ROI

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Open-loop deep brain stimulation for the treatment of epilepsy: a systematic review of clinical outcomes over the past decade (2008–present)

James J. Zhou, Tsinsue Chen, S. Harrison Farber, Andrew G. Shetter, and Francisco A. Ponce

μsec; continuous ± day/night cycling 12–48 mos 50% (1/2) Both pts exhibited neuropsychological decline w/ DBS, including worsening attention, aboulia, apathy, & mood changes. No improvement in functional status or QOL noted in either case None described Koubeissi et al., 2013 CS 11 Fornix 8 mA/phase; 5 Hz; 0.2 μsec; 4-hr sessions 48 hrs NA LFS of the fornix resulted in a significant increase in MMSE scores, mostly due to improvement in delayed recall scores None described Schmitt et al., 2014 CS 5 Bilat NAC + bilat ANT 5 V; 125 Hz; 90 μsec; intermittent (1 on, 5 off

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New endoscopic route to the temporal horn of the lateral ventricle: surgical simulation and morphometric assessment

Laboratory investigation

Jose Juan González Sánchez, Jordina Rincon-Torroella, Alberto Prats-Galino, Matteo de Notaris, Joan Berenguer, Enrique Ferrer Rodríguez, and Arnau Benet

uncal recess. In the atrium, we recognized its medial wall with the corpus callosum impression superiorly and calcar avis inferiorly. In the anterior wall of the atrium, we identified the entrance to the body of the lateral ventricle superiorly (we defined this endoscopic landmark as the frontal ostium), the temporal ostium inferiorly, and the choroid plexus between them. During this step, retraction of the choroid plexus provided access to the fornix, the fimbrialfornical joint, and the hippocampus tail. In the floor of the atrium, we observed the collateral

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Mesial temporal lobe morphology in intractable pediatric epilepsy: so-called hippocampal malrotation, associated findings, and relevance to presurgical assessment

James L. Leach, Reem Awwad, Hansel M. Greiner, Jennifer J. Vannest, Lili Miles, and Francesco T. Mangano

,” or HIMAL, “incomplete hippocampal inversion,” or “hippocampal morphologic modification”). 1 , 2 , 4 , 5 , 12 , 20 Imaging criteria for HIMAL have varied but have typically included asymmetrical medialized rounded hippocampal shape, vertical collateral sulcus, internal architecture blurring, and ipsilateral low fornix position. 1 , 2 , 12 Prior studies have reported a wide variation in HIMAL prevalence, from 1%–19% in healthy controls to 6%–30% in patients with epilepsy (mostly adult studies), 1 , 2 , 5 , 31 with the highest prevalence in significant anomalies of

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Primary intracerebral malignant lymphoma: report of 248 cases

Benoit Bataille, Vincent Delwail, Emmanuelle Menet, Pierre Vandermarcq, Pierre Ingrand, Michel Wager, Gilles Guy, and Francoise Lapierre

lobe (36), temporal lobe (29), basal ganglia (25), corpus callosum (21), cerebellum (12), brainstem (13), insula (eight), occipital lobe (seven), and fornix (five). Nine lesions were exclusively cortical and resembled a meningioma. A bilateral mirror pattern was found in six patients (5%). For 18% of the lesions, contrast-enhanced images revealed ependymal contact with the ventricular wall. The lesion location was infratentorial for only 13% of all tumors and in 18% of all patients. Among the 196 lesions, 90% were larger than 1 cm, with the largest measuring 6 cm. On

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A brain-tumor model utilizing stereotactic implantation of a permanent cannula

Vittorio M. Morreale, Barbara H. Herman, Violette Der-Minassian, Miklós Palkovits, Phillip Klubes, David Perry, Attila Csiffary, and Alex P. Lee

coordinates by estimating anterior or posterior by ± 0.5 mm. Results Tumor Production In Group I animals, injection of 10 6 C6 and 10 6 W256 cells resulted in tumor being produced in all five rats of both groups. Similarly, in Group II animals, 10 5 C6 and 10 5 W256 cells resulted in tumor in all five rats of both groups. Morphology There was no invasion of the fornix, nucleus accumbens, or hippocampus, nor evidence of hydrocephalus for either of the groups. Representative sections are presented in Fig. 1 and described below. Fig. 1

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Interhemispheric transchoroidal approach to resect third ventricular teratoma

Yuki Ito, Tomohiro Inoue, Akira Tamura, and Kazuo Tsutsumi

The authors demonstrate an interhemispheric transchoroidal approach for third ventricular teratoma resection. Interhemispheric dissection exposed the corpus callosum at a length of about 2 cm. A callosotomy was made to enter into the right lateral ventricle. After septal vein ligation, dissection was made of the space between the right fornix and right internal cerebral vein (ICV); thus bilateral fornix and left ICV would be retracted to the left; right choroid plexus, right ICV to the right. By this transchoroidal approach, the foramen of Monro was extended posteriorly, providing enough of a surgical corridor to resect a posteriorly located third ventricular tumor.

The video can be found here: https://youtu.be/gIzPiH3zx_o.

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Endoscopic ultrasonic resection of calcified tumor of the third ventricle

Pietro Spennato, Nicola Onorini, Francesca Vitulli, Alessia Imperato, Lucia De Martino, Claudio Ruggiero, and Giuseppe Cinalli

only the tumor is aspirated inside the cannula, and is fragmented by the sonication inside the cannula lumen, and we don’t take any risk. 3:02 Tumor Debulking. Here we are approaching the pillar on the fornix. The bleeding starts to become a little bit more important, but the large ventricular chamber helps us to keep the vision extremely acceptable throughout the procedure. 3:19 Dissection From the Fornix. And here we are removing the adhesion of the tumor at the level of the pillar of the fornix and very close to the choroid plexus and very close to

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A randomized double-blind crossover trial comparing subthalamic and pallidal deep brain stimulation for dystonia

Clinical article

Lisbeth Schjerling, Lena E. Hjermind, Bo Jespersen, Flemming F. Madsen, Jannick Brennum, Steen R. Jensen, Annemette Løkkegaard, and Merete Karlsborg

figure at this time. F ig . 2. Eleven patients had postoperative documentation of the electrode placement: 4 by MRI, 3 by CT, and 4 by both. The center of each electrode was marked on axial slides of postoperative CT or FLAIR MR images, which were fused to preoperative T2-weighted MR images to ensure that anatomical structures were not influenced by artifacts. The positions are marked on a standard anatomical atlas. AC = anterior commissure; Fx = fornix; GPe = globus pallidus externus; GPi = globus pallidus internus; Int. Cap. = internal capsule; MMT