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Mark M. Souweidane and Neal Luther

treatment for colloid cysts of the third ventricle: the experience of a decade . Neurosurgery 52 : 525 – 533 , 2003 10.1227/01.NEU.0000047671.27057.55 8 Luther N , Cohen A , Souweidane MM : Hemorrhagic sequelae from intracranial neuroendoscopic procedures for intraventricular tumors . Neurosurg Focus 19 : 1 E9 , 2005 9 MacArthur DC , Buxton N , Punt J , Vloeberghs M , Robertson IJA : The role of neuroendoscopy in the management of brain tumours . Br J Neurosurg 16 : 465 – 470 , 2002 10.1080/0268869021000030276 10 Oi S , Shibata

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Bart Depreitere, Neermala Dasi, James Rutka, Peter Dirks, and James Drake

T he modern era of neuroendoscopy was ushered in almost 50 years ago, prompted by advances in light and lens technology. At present, the endoscope is considered a safe neurosurgical tool that has demonstrated value in the treatment of obstructive hydrocephalus 5 and arachnoid cysts; 1 it is also a useful adjunct in skull base procedures. 2 The use of endoscopy for biopsy of intraventricular tumors was first reported by Fukushima 4 in 1978 as an innovative technique enabling biopsy procedures to be performed under direct tumor visualization in the CSF

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Nitin Tandon, Thomas J O'Neill, Dennis G. Vollmer, and Min Wang

M elanocytomas are rare tumors of the CNS. They typically originate in locations similar to meningiomas, reflecting their origin from pigmented cells in the leptomeninges. 4 , 10 The patient presented in this paper is the first reported case of the occurrence of an intraventricular melanocytoma, which was found in the temporal horn of the lateral ventricle and was completely resected. The location of the tumor and its vascular supply suggest that similar to arachnoid cap cells, melanocytes may also migrate into the choroidal fissure and, infrequently, may

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Sandeep Sood, Neelesh Nundkumar, and Steven D. Ham

U nlike transsphenoidal endoscopic surgery, 4 , 6 in which significant strides have been made in technology and technique, intraventricular endoscopic surgery has been somewhat limited by the inability to bimanually handle tumor. 5 Dual ports 2 have been described for the resection of colloid cysts, but traversing the brain bilaterally is not an attractive option. The use of a single large port 3 allowing multiple instruments and the endoscope to be placed within the same port is an effective strategy, limited by difficulty in cannulating small

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Joo-Hun David Eum, Astrid Jeibmann, Werner Wiesmann, Werner Paulus, and Heinrich Ebel

. Case Report Examination and Operation This 67-year-old man with no significant medical history presented with headache and right hemiparesis that slowly worsened over a 2-month period. His family had noted a change in his personality. Neurological examination revealed right hemiparesis with facial involvement and hemihypesthesia. Cranial MR imaging displayed a large homogeneous contrast-enhancing intraventricular mass and hydrocephalus ( Fig. 1 ). The patient underwent left occipital craniotomy. Intraoperatively, the tumor appeared to be an encapsulated

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Cesare Giorgi and Daria Riva

T he best surgical approach to intraventricular midline tumors has long been debated. The transcortical-transventricular approach, first described by Dandy 6 in 1922, was used by other authors 24 until the midline approach, incorporating the technique described in 1944 by Busch, 3 was adopted. This was later modified with the introduction of transcallosal dissection. 25 The arguments in favor of the midline approach largely overwhelm those for the transcortical route, which is preferable only in cases with enlarged ventricles. The transcallosal approach

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Daniel Y. Suh and Timothy Mapstone

A variety of mass lesions can arise within or in proximity to the ventricular system in children. These lesions are relatively uncommon, and they present a unique diagnostic and surgical challenge. The differential diagnosis is determined by tumor location in the ventricular system, clinical presentation, age of the patient, and the imaging characteristics of the lesion. In this report the authors provide an introduction to and an overview of the most common pediatric supratentorial intraventricular tumors. The typical radiographic features of each tumor and location preference within the ventricular system are reviewed. Management and treatment considerations are discussed. Examination of tissue samples to obtain diagnosis is usually required for accurate treatment planning, and resection without adjuvant therapies is often curative. The critical management decision frequently involves determining which lesions are appropriate for surgical therapy. Care ful preoperative neuroimaging is extremely useful in planning surgery. Knowledge of the typical imaging characteristics of these tumors can help to determine the diagnosis with relative certainty when a tissue sample has not been obtained, because a small subset of these lesions can be managed expectantly.

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Hideki Ogiwara and Nobuhito Morota

. Neurosurgery 42 : 1288 – 1296 , 1998 10.1097/00006123-199806000-00051 5 Ferrer E , Santamarta D , Garcia-Fructuoso G , Caral L , Rumià J : Neuroendoscopic management of pineal region tumours . Acta Neurochir (Wien) 139 : 12 – 21 , 1997 10.1007/BF01850862 6 Fukushima T : Endoscopic biopsy of intraventricular tumors with the use of a ventriculofiberscope . Neurosurgery 2 : 110 – 113 , 1978 10.1227/00006123-197803000-00006 7 Gaab MR , Schroeder HWS : Neuroendoscopic approach to intraventricular lesions . J Neurosurg 88 : 496 – 505

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Giuseppe Cinalli, Alessia Imperato, Giuseppe Mirone, Giuliana Di Martino, Giancarlo Nicosia, Claudio Ruggiero, Ferdinando Aliberti, and Pietro Spennato

, Buxton N , Vloeberghs M , Punt J : The effectiveness of neuroendoscopic interventions in children with brain tumours . Childs Nerv Syst 17 : 589 – 594 , 2001 11685520 10.1007/s003810100490 12 Mohanty A , Thompson BJ , Patterson J : Initial experience with endoscopic side cutting aspiration system in pure neuroendoscopic excision of large intraventricular tumors . World Neurosurg 80 : 655.e15 – 655.e21 , 2013 10.1016/j.wneu.2012.11.070 13 Oertel J , Krauss JK , Gaab MR : Ultrasonic aspiration in neuroendoscopy: first results with a

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Neal Luther, William R. Stetler Jr., Ira J. Dunkel, Paul J. Christos, John C. Wellons III, and Mark M. Souweidane

N euroendoscopy plays a critical role in the management of intraventricular tumors. For lesions of the posterior third ventricle, a simultaneous ETV and tumor biopsy procedure provides a means of discerning pathology and treating obstructive hydrocephalus. There is, however, a theoretical risk of increasing the potential for leptomeningeal tumor dissemination, which is purported to occur because of the newly formed communication between the ventricular and subarachnoid spaces. Such concern originates from the practical point that upon tumor manipulation