<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dcterms="http://purl.org/dc/terms/">
<rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/112">
    <dcterms:title><![CDATA[EDITORIAL]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:description><![CDATA[Editorial]]></dcterms:description>
    <dcterms:creator><![CDATA[Dr. Jaime Rimoldi]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:rights><![CDATA[Asociación Argentina de Neurocirugía]]></dcterms:rights>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/113">
    <dcterms:title><![CDATA[ENTREVISTA]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/114">
    <dcterms:title><![CDATA[Resultados del tratamiento quirúrgico de la acromegalia]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:description><![CDATA[Artículo de Revisión]]></dcterms:description>
    <dcterms:abstract><![CDATA[<strong>RESUMEN</strong><br /> <strong>Objetivo:</strong> La acromegalia es un desorden poco frecuente causado por la hipersecreci&oacute;n anormal de hormona de crecimiento por parte de un adenoma hipofisario. La cirug&iacute;a transesfenoidal es generalmente la primera opci&oacute;n terap&eacute;utica. <br /> El objetivo de este art&iacute;culo es establecer la efectividad del abordaje trasnasal-transesfenoidal en el tratamiento de los adenomas productores de GH e identificar factores de riesgo de persistencia de la enfermedad. <br /> <strong>Material y M&eacute;todos: S</strong>e realiz&oacute; una revisi&oacute;n retrospectiva de 81 pacientes tratados de acromegalia con cirug&iacute;a transesfenoidal entre los a&ntilde;os 2006 y 2010. <br /> <strong>Resultados: </strong>Los adenomas mayores a 1 cm (macroadenomas) representaron el 66.7% de los casos. En el 28.4% de estos pacientes (n=23) se evidenci&oacute; en la RMN de cerebro con gadolinio invasi&oacute;n del seno cavernoso. La curaci&oacute;n de la enfermedad, tanto oncol&oacute;gica como hormonal, se alcanz&oacute; en el 72.8% (n=59). Todos los microadenomas (n=27) fueron manejados efectivamente con cirug&iacute;a transnasal-transesfenoidal, mientras que la curaci&oacute;n completa en el caso de los macroadenomas fue del 66.7%. El an&aacute;lisis estad&iacute;stico univariado demostr&oacute; que la persistencia de la enfermedad se encontraba estad&iacute;sticamente asociada con tres variables: tama&ntilde;o tumoral, valores hormonales preoperatorios e invasi&oacute;n del seno cavernoso. El odds ratio para la remisi&oacute;n completa de la enfermedad fue de 1.68 para los microadenomas y de 0.033 para los macroadenomas con invasi&oacute;n del seno cavernoso (p&lt;0.001). Los valores de GH preoperatorios se relacionaron estad&iacute;sticamente con curaci&oacute;n de la enfermedad durante el per&iacute;odo de seguimiento (p&lt;0.05). Sin embargo tras realizar un an&aacute;lisis de regresi&oacute;n log&iacute;stica multivariado se demostr&oacute; que la invasi&oacute;n del seno cavernoso es la &uacute;nica variante que se asocia significativamente con la persistencia de la enfermedad (OR 3.52, p&lt;0.05). <br /> <strong>Conclusi&oacute;n:</strong> El abordaje transnasal resulta ser efectivo en el tratamiento y curaci&oacute;n de la acromegalia. La invasi&oacute;n del seno cavernoso es el mejor predictor de persistencia de la enfermedad.
<p><strong>Palabras Clave:</strong> Acromegalia; Abordaje Transesfenoidal; Adenoma Hipofisario</p>]]></dcterms:abstract>
    <dcterms:creator><![CDATA[Pablo Ajler]]></dcterms:creator>
    <dcterms:creator><![CDATA[Álvaro Campero]]></dcterms:creator>
    <dcterms:creator><![CDATA[Federico Landriel]]></dcterms:creator>
    <dcterms:creator><![CDATA[Ezequiel Goldschmidt]]></dcterms:creator>
    <dcterms:creator><![CDATA[Santiago Hem]]></dcterms:creator>
    <dcterms:creator><![CDATA[Sofía Beltrame]]></dcterms:creator>
    <dcterms:creator><![CDATA[Claudio Yampolsky]]></dcterms:creator>
    <dcterms:creator><![CDATA[Antonio Carrizo]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:rights><![CDATA[Asociación Argentina de Neurocirugía]]></dcterms:rights>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
    <dcterms:bibliographicCitation><![CDATA[<p><strong>BIBLIOGRAF&Iacute;A</strong></p>
<ol>
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<li>Colao A, Attanasio R, Pivonello R, Cappabianca P, Cavallo LM, Lasio G, Lodrini A, Lombardi G, Cozzi R: Partial surgical removal of growth hormone-secreting pituitary tumors enhances the response to somatostatin analogs in acromegaly. J Clin Endocrinol Metab 91: 85-92, 2006.</li>
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<li>Cappabianca P, Alfieri A, Colao A, Ferone D, Lombardi G, Divitis E: Endoscopic endonasal transsphenoidal approach: an additional reason in support of surgery in the management of pituitary lesions. Skull Base Surg 9: 109-117, 1999.</li>
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<li>Gondim JA, Almeida JP, Albuquerque LA, Schops M, Gomes E, Ferraz T, Sobreira W, Kretzmann M T: Endoscopic endonasal approach for pituitary adenoma: surgical complications in 301 patients. Pituitary 14: 174-183, 2011.</li>
<li>Lasio G, Ferroli P, Felisati G, Broggi G: Image-guided endoscopic transnasal removal of recurrent pituitary adenomas. Neurosurgery 51:132-137, 2002.</li>
<li>Leach P, Abou-Zeid AH, Kearney T, Davis J, Trainer PJ, Gnanalingham KK: Endoscopic transsphenoidal pituitary surgery: evidence of an operative learning curve. Neurosurgery 67:1205-1212, 2010.</li>
<li>Spaziante R, de Divitiis E, Cappabianca P: Reconstruction of the pituitary fossa in transsphenoidal surgery: an experience of 140 cases. Neurosurgery 17:453-458, 1985.</li>
<li>Ciric I, Mikhael M, Stafford T, Lawson L, Garces R: Transsphenoidal microsurgery of pituitary macroadenomas with long-term follow-up results. J Neurosurg 59: 395-401, 1983.</li>
<li>Ciric I, Rosenblatt S, Zhao JC: Transsphenoidal microsurgery. Neurosurgery 51: 161-169, 2002.</li>
<li>Hardy J: Transsphenoidal microsurgery of the normal and pathological pituitary. Clin Neurosurg 16: 185-217, 1969.</li>
<li>Shimon I, Cohen ZR, Ram Z, Hadani M: Transsphenoidal surgery for acromegaly: endocrinological follow-up of 98 patients. Neurosurgery 48:1239-43, 2001.</li>
<li>Landriel Iba&ntilde;ez FA, Hem S, Ajler P, Vecchi E, Ciraolo C, Baccanelli M, Tramontano R, Knezevich F, Carrizo A: A new classification of complications in neurosurgery. World Neurosurg 75: 709-15, 2011.</li>
<li>Freda PU, Wardlaw SL, Post KD: Long-term endocrinological follow-up evaluation in 115 patients who underwent transsphenoidal surgery for acromegaly. J Neurosurg 89: 353-358, 1998.</li>
<li>Gittoes NJ, Sheppard MC, Johnson AP, Stewart PM: Outcome of surgery for acromegaly-the experience of a dedicated pituitary surgeon. QJM 92: 741-745, 1999.</li>
<li>Jane JAJ, Starke RM, Elzoghby MA, Reames DL, Payne SC, Thorner MO, Marshall JC, Laws ERJ, Vance ML: Endoscopic transsphenoidal surgery for acromegaly: remission using modern criteria, complications, and predictors of outcome. J Clin Endocrinol Metab 96: 2732&ndash;2740, 2011.</li>
<li>Beauregard C, Truong U, Hardy J, Serri O: Long-term outcome and mortality after transsphenoidal adenomectomy for acromegaly. Clin Endocrinol (Oxf) 58: 86-91, 2003.</li>
<li>Biermasz NR, van Dulken H, Roelfsema F: Ten-year follow-up results of transsphenoidal microsurgery in acromegaly. J Clin Endocrinol Metab 85: 4596-4602, 2000.</li>
<li>Sesmilo G, Gaztambide S, Venegas E, Pic&oacute; A, Del Pozo C, Blanco C, Torres E, Alvarez-Escol&agrave; C, Fajardo C, Garc&iacute;a R, C&aacute;mara R, Bernabeu I, Soto A, Villabona C, Serraclara A, Halperin I, Alc&aacute;zar V, Palomera E, Webb SM; l REA investigators: Changes in acromegaly treatment over four decades in Spain: analysis of the Spanish Acromegaly Registry (REA). Pituitary 16(1):115-21, 2013.</li>
<li>Krzentowska-Korek A, Gołkowski F, Bałdys-Walig&oacute;rska A, Hubalewska-Dydejczyk A: Efficacy and complications of neurosurgical treatment of acromegaly. Pituitary 14: 157-162, 2011.</li>
<li>Attanasio R, Montini M, Valota M, Cortesi L, Barbo R, Biroli F, Tonnarelli G, Albizzi M, Testa RM, Pagani G: An audit of treatment outcome in acromegalic patients attending our center at Bergamo, Italy. Pituitary 11: 1&ndash;11, 2008.</li>
<li>Bourdelot A, Coste J, Hazebroucq V, Gaillard S, Cazabat L, Bertagna X, Bertherat J: Clinical, hormonal and magnetic resonance imaging (MRI) predictors of transsphenoidal surgery outcome in acromegaly. Eur J Endocrinol 150: 763&ndash;771, 2004.</li>
<li>Kreutzer J, Vance ML, Lopes MB, Laws ER Jr: Surgical management of GH-secreting pituitary adenomas: an outcome study using modern remission criteria. J Clin Endocrinol Metab 86: 4072&ndash;4077, 2001.</li>
<li>Minniti G, Jaffrain-Rea ML, Esposito V, Santoro A, Tamburrano G, Cantore G: Evolving criteria for post-operative biochemical remission of acromegaly: can we achieve a definitive cure? An audit of surgical results on a large series and a review of the literature. Endocr Relat Cancer 10:611&ndash;619, 2003.</li>
<li>van Bunderen CC, van Varsseveld NC, Baayen JC, van Furth WR, Aliaga ES, Hazewinkel MJ, Majoie CB, Freling NJ, Lips P, Fliers E, Bisschop PH, Drent ML: Predictors of endoscopic transsphenoidal surgery outcome in acromegaly: patient and tumor characteristics evaluated by magnetic resonance imaging. Pituitary. Apr 26. [Epub ahead of print] 2012.</li>
<li>Fatemi N, Dusick JR, Mattozo C, McArthur DL, Cohan P, Boscardin J, Wang C, Swerdloff RS, Kelly DF: Pituitary hormonal loss and recovery after transsphenoidal adenoma removal. Neurosurgery 63: 709-718, 2008.</li>
<li>Barker FG, Klibanski A, Swearingen B: Transsphenoidal surgery for pituitary tumors in the United States, 1996-2000: mortality, morbidity, and the effects of hospital and surgeon volume. J Clin Endocrinol Metab 88: 4709-4719, 2003.</li>
<li>Nomikos P, Buchfelder M, Fahlbusch R: The outcome of surgery in 668 patients with acromegaly using current criteria of biochemical 'cure'. Eur J Endocrinol 152:379-387, 2005.</li>
</ol>]]></dcterms:bibliographicCitation>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/117">
    <dcterms:title><![CDATA[Patrón de crecimiento de los adenomas hipofisarios]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:description><![CDATA[Artículo Original]]></dcterms:description>
    <dcterms:abstract><![CDATA[<strong>RESUMEN</strong><br /> <strong>Objetivo:</strong> Determinar el patr&oacute;n de expansi&oacute;n de los adenomas hipofisarios (AH), as&iacute; como la variaci&oacute;n del patr&oacute;n de crecimiento entre tumores no funcionantes, prolactinomas, y tumores productores de hormona de crecimiento.<br /> <strong>Pacientes y M&eacute;todo:</strong> Se estudiaron los AH (no funcionantes, prolactinomas, y productores de hormona de crecimiento), operados entre julio de 2005 y diciembre de 2012, que presentaban una extensi&oacute;n m&aacute;s all&aacute; de los l&iacute;mites de la fosa hipofisaria. Para el an&aacute;lisis de asociaci&oacute;n se calcul&oacute; el Test Chi Cuadrado. <br /> <strong>Resultados: </strong>91 casos cumplieron con los criterios de inclusi&oacute;n. Cuarenta y nueve presentaron tumores no funcionantes, 22 prolactinomas y 20 acromegalias. El patr&oacute;n de crecimiento global de los AH fue: 85% hacia la regi&oacute;n supraselar, 57% hacia el seno esfenoidal, y 27% hacia el seno cavernoso. El 96% de los pacientes con adenomas no funcionantes presentaron una extensi&oacute;n supraselar, y el 80% de los pacientes con acromegalia mostraron una extensi&oacute;n hacia el seno esfenoidal.<br /> <strong>Conclusi&oacute;n: </strong>El patr&oacute;n de crecimiento de los AH se asocia al tipo de tumor; el crecimiento supraselar es m&aacute;s frecuente en los tumores no funcionantes, mientras que el crecimiento hacia el seno esfenoidal es m&aacute;s frecuente en los pacientes con acromegalia.
<p><strong>Palabras claves</strong>: Acromegalia; Adenoma Hipofisario; Adenoma no Funcionante; Prolactinoma; Seno Cavernoso</p>]]></dcterms:abstract>
    <dcterms:creator><![CDATA[Álvaro Campero]]></dcterms:creator>
    <dcterms:creator><![CDATA[Pablo Ajler]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:rights><![CDATA[Asociación Argentina de Neurocirugía]]></dcterms:rights>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
    <dcterms:bibliographicCitation><![CDATA[<p><strong>BIBLIOGRAF&Iacute;A</strong></p>
<ol><ol><ol>
<li>Karavitaki N: Prevalence and incidence of pituitary adenomas. Ann Endocrinol (Paris) 73:79-80, 2012.</li>
<li>Buchfelder M, Schlaffer S: Surgical treatment of pituitary tumours. Best Practice &amp; Research Clinical Endocrinology &amp; Metabolism 23:677-692, 2009.</li>
<li>Buchfelder M: Management of aggressive pituitary adenomas: current treatment strategies. Pituitary 12:256-260, 2009.</li>
<li>Ahmadi J, North CM, Segall HD, Zee CS, Weiss MH: Cavernous sinus invasion by pituitary adenomas. Am J Roentgenol 146:257-262, 1986.</li>
<li>Fahlbusch R, Buchfelder M: Transsphenoidal surgery of parasellar pituitary adenomas. Acta Neurochir (Wien) 92:93-99, 1988.</li>
<li>Cottier JP, Destrieux C, Brunereau L, Bertrand P, Moreau L, Jan M, Herbreteau D: Cavernous sinus invasion by pituitary adenoma: MR imaging. Radiology 215:463-469, 2000.</li>
<li>Vieira JO, Cukiert A, Liberman B: Evaluation of magnetic resonance imaging criteria for cavernous sinus invasion in patients with pituitary adenomas: logistic regression analysis and correlation with surgical findings. Surgical Neurology 65:130-135, 2006.</li>
<li>Ense&ntilde;at J, Ortega A, Topcewski T, Vilalta J, Obiols G, Mesa J, Sahuquillo J: Valor predictivo de la clasificaci&oacute;n de Knosp en el grado de resecci&oacute;n quir&uacute;rgica de los macroadenomas invasivos. Estudio prospectivo de una serie de 23 casos. Neurocirug&iacute;a 17:519-526, 2006.</li>
<li>Selman WR, Laws ER, Scheithauer BW, Carpenter SM: The occurrence of dural invasion in pituitary adenomas. J Neurosurg 64:402-407, 1986.</li>
<li>Scheithauer BW, Kovacs KT, Laws ER, Randall RV: Pathology of invasive pituitary tumors with special reference to functional classification. J Neurosurg 65:733-744, 1986.</li>
<li>Meij BP, Lopes MBS, Ellegala DB, Alden TD, Laws ER: The long-term significance of microscopic dural invasion in 354 patients with pituitary adenomas treated with transsphenoidal surgery. J Neurosurg 96:195&ndash;208, 2002.</li>
<li>Knosp E, Steiner E, Kitz K, Matula C: Pituitary adenomas with invasion of the cavernous sinus space: A magnetic resonance imaging classification compared with surgical findings. Neurosurgery 33:610-618, 1993.</li>
<li>Zada G, Lin N, Laws ER Jr: Patterns of extrasellar extension in growth hormone-secreting and nonfunctional pituitary macroadenomas. Neurosurg Focus 29:E4, 2010.</li>
<li>Martins AL, Hayes GJ, Kempe LG: Invasive pituitary adenomas. J Neurosurg 22:268-276, 1965.</li>
<li>Wierinckx A, Auger C, Devauchelle P, Reynaud A, Chevallier P, Jan M, Perrin G, Fe`vre-Montange M, Rey C, Figarella-Branger D, Raverot G, Belin MF, Lachuer JI, Trouillas J: A diagnostic marker set for invasion, proliferation, and aggressiveness of prolactin pituitary tumors. Endocrine-Related Cancer 14:887-900, 2007.</li>
<li>Gong J, Zhao Y, Abdel-Fattah R, Amos S, Xiao A, Lopes MBS, Hussaini IM, Laws ER: Matrix metalloproteinase-9, a potential biological marker in invasive pituitary adenomas Pituitary 11:37-48, 2008.</li>
<li>Elston MS, Gill AJ, Conaglen JV, Clarkson A, Cook RJ, Little NS, Robinson BG, Clifton-Bligh RJ, McDonald KL: Nuclear accumulation of e-cadherin correlates with loss of cytoplasmic membrane staining and invasion in pituitary adenomas. J Clin Endocrinol Metab 94:1436-1442, 2009.</li>
<li>Fougner SL, Lekva T, Borota OC, Hald JK, Bollerslev J, Berg JP: The expression of e-cadherin in somatotroph pituitary adenomas is related to tumor size, invasiveness, and somatostatin analog response. J Clin Endocrinol Metab 95:2334-2342, 2010.</li>
<li>Wang EL, Qian ZR, Rahman M, Yoshimoto K, Yamada S, Kudo E, Sano T: Increased expression of HMGA1 correlates with tumour invasiveness and proliferation in human pituitary adenomas. Histopathology 56:501-509, 2010.</li>
<li>Yokoyama S, Hirano H, Moroki K, Goto M, Imamura S, Kuratsu J: Are nonfunctioning pituitary adenomas extending into the cavernous sinus aggressive and/or invasive? Neurosurgery 49:857-863, 2001.</li>
<li>Campero A, Socolovsky M, Torino R: Direcci&oacute;n del crecimiento de un adenoma de hip&oacute;fisis de acuerdo a la anatom&iacute;a del diafragma selar. Revista Argentina de Neurocirug&iacute;a 19:123-125, 2005.</li>
<li>Campero A, Martins C, Yasuda A, Rhoton AL Jr: Microsurgical anatomy of the diaphragm sellae and its role in directing the pattern of growth of pituitary adenomas. Neurosurgery 62:717-723, 2008.</li>
<li>Kursat E, Yilmazlar S, Aker S, Aksoy K, Oygucu H: Comparison of lateral and superior walls of the pituitary fossa with clinical emphasis on pituitary adenoma extension: cadaveric-anatomic study. Neurosurg Rev 31:91-99, 2008.</li>
<li>Scotti G, Yu CY, Dillon WP, Norman D, Colombo N, Newton TH, De Groot J, Wilson CB: MR imaging of cavernous sinus involvement by pituitary adenomas. AJR 151:799-806, 1988.</li>
<li>Lundin P, Nyman R, Burman P, Lundberg PO, Muhr C: MRI of pituitary macroadenomas with reference to hormonal activity. Neuroradiology 34:43-51, 1992.</li>
<li>Campero A, Seoane E: Estructura men&iacute;ngea del seno cavernoso. Revista Argentina de Neurocirug&iacute;a 16:59-63, 2002.</li>
<li>Yasuda A, Campero A, Martins C, Rhoton AL, Jr, Ribas GC: The medial wall of the cavernous sinus: an anatomical study. Neurosurgery 55:179-90, 2004.</li>
<li>Martins C, Campero A, Yasuda A, Rhoton AL: Microsurgical anatomy of parasellar area. Surgical Anatomy for Microneurosurgery XIX:81-90, 2006.</li>
<li>Campero A, Campero AA, Martins C, Yasuda A, Rhoton AL: The dural walls of the cavernous sinus. Surgical anatomy. Journal of Clinical Neuroscience 17:746-750, 2010.</li>
<li>Hagiwara A, Inoue Y, Wakasa K, Haba T, Tashiro T, Miyamoto T: Comparison of growth-hormone producing and non-growth-hormone producing pituitary adenomas: imaging characteristics and pathologic correlation. Radiology 228:533-538, 2008.</li>
<li>Luo CB, Teng MM, Chen SS, Lirng JF, Chang FC, Guo WY, Chang CY: Imaging of invasiveness of pituitary adenomas. Kaohsiung J Med Sci 16:26-31, 2000.</li>
<li>Chen X, Dai J, Ai L, Ru X, Wang J, Li S, Young GS: Clival invasion on multi-detector CT in 390 pituitary macroadenomas: correlation with sex, subtype and rates of operative complication and recurrence. AJNR 32:785-789, 2011.</li>
</ol></ol></ol>
<p>&nbsp;</p>]]></dcterms:bibliographicCitation>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/119">
    <dcterms:title><![CDATA[Abordaje a la cisterna ambiens]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:description><![CDATA[Nota Técnica]]></dcterms:description>
    <dcterms:abstract><![CDATA[<strong>RESUMEN<br /> Objetivo:</strong> Describir paso a paso el abordaje a la cisterna ambiens por la vía suboccipital retrosigmoidea supracerebelosa infratentorial (SRSI).<br /> <strong>Descripción: </strong>El abordaje SRSI se realiza de la misma manera que el abordaje suboccipital retrosigmoideo (SR), utilizado habitualmente para acceder a la patología del ángulo pontocerebeloso, con las siguientes modificaciones: 1) utilizamos siempre la posición semisentado, 2) la craneotomia-craniectomia debe exponer el seno transverso y extenderse 5 cm medialmente hacia el inion, 3) al realizar la apertura dural es necesario rebatir la duramadre junto con el seno transverso hacia cefálico con puntos de tracción, 4) bajo magnificación con microscopio quirúrgico se debe realizar la apertura de la cisterna cerebelobulbar para drenar líquido cefalorraquídeo, 5) en el plano supracerebeloso es fundamental cortar las bridas aracnoidales y de ser necesario debemos coagular y cortar las venas puente, todas estas maniobras sumadas al efecto de la gravedad brindan mayor apertura del corredor supracerebeloso.<br /> <strong>Conclusión:</strong> El abordaje a la cisterna ambiens por la vía SRSI es una opción segura para el acceso de patologías tumorales que se alojan en esta zona con un componente predominantemente infratentorial.
<p><strong>Palabras clave:</strong> Abordaje; Supracerebeloso; Infratentorial; Cisterna Ambiens</p>]]></dcterms:abstract>
    <dcterms:creator><![CDATA[Pablo Ajler]]></dcterms:creator>
    <dcterms:creator><![CDATA[Michael Cruz Bravo]]></dcterms:creator>
    <dcterms:creator><![CDATA[Lucas Garategui]]></dcterms:creator>
    <dcterms:creator><![CDATA[Ezequiel Goldschmidt]]></dcterms:creator>
    <dcterms:creator><![CDATA[Gustavo Rassier Isolan]]></dcterms:creator>
    <dcterms:creator><![CDATA[Álvaro Campero]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:rights><![CDATA[Asociación Argentina de Neurocirugía]]></dcterms:rights>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
    <dcterms:bibliographicCitation><![CDATA[<strong>BIBLIOGRAFÍA</strong><br />
<ol>
<li>Campero A, Londono Herrera D., Ajler P. Abordaje retrosigmoideo. Rev Argent Neuroc 28, 3: 114-119, 2014.</li>
<li>Sanai N., Mirzadeh Z., Lawton M. Supracerebellar-Supratrochlear and Infratentorial-Infratrochlear approaches: Gravity dependent variations of the lateral approach over the cerebellum. Neurosurgery 66: 264-274, 2010.</li>
<li>Ammirati M, Bernardo A, Musumeci A, Bricolo A Comparison of different infratentorial-supracerebellar approaches to the posterior and middle incisural space: a cadaveric study. J Neurosurg 97:922–928, 2002.</li>
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</ol>]]></dcterms:bibliographicCitation>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/120">
    <dcterms:title><![CDATA[Tratamiento quirúrgico de los hemangioblastomas del sistema nervioso central<br />
]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:abstract><![CDATA[<strong>RESUMEN<br /> Introducci&oacute;n: </strong>Los hemangioblastomas (HEB) son tumores poco frecuentes del sistema nervioso central (SNC) representando el 1-2,5% de todos los tumores intracraneanos. Pueden presentarse espor&aacute;dicamente o en el contexto del s&iacute;ndrome de von Hippel-Lindau (VHL), predominando en el cerebelo, tronco cerebral y m&eacute;dula espinal. El s&iacute;ndrome de VHL es un s&iacute;ndrome neopl&aacute;sico m&uacute;ltiple transmitido en forma autos&oacute;mica dominante causado por la deleci&oacute;n del gen supresor del VHL. Presentamos nuestra experiencia en el tratamiento de los pacientes con HEB.<br /> <strong>Material y m&eacute;todo:</strong> Cuarenta pacientes consecutivos con HEB fueron incluidos en este estudio. Las historias cl&iacute;nicas, im&aacute;genes radiol&oacute;gicas y partes quir&uacute;rgicos fueron analizados. Se utiliz&oacute; la escala modificada de Rankin para evaluar el curso cl&iacute;nico de las lesiones intracraneanas y la escala de Mc Cormick para las medulares.<br /> <strong>Resultados: </strong>Treinta HEB (75%) se localizaron en el cerebelo, 6 (15%) en el tronco cerebral, 2 (5%) en la m&eacute;dula espinal y 1 (2,5%) en regi&oacute;n supratentorial y cauda equina respectivamente. Treinta y cinco (87,5%) lesiones fueron espor&aacute;dicas y 5 (12,5%) se dieron en el contexto de VHL. Resecci&oacute;n completa se obtuvo en 93% de las lesiones cerebelosas y en el 83% de las de tronco cerebral. Postoperatoriamente, 83% de los HEB cerebelosos y 66,6% de los de tronco cerebral mostraron buenos resultados funcionales.<br /> <strong>Conclusiones: </strong>Los HEB del SNC deben ser resecados cuando presentan s&iacute;ntomas o evidencias de crecimiento radiol&oacute;gico. La resecci&oacute;n deber&iacute;a ser en bloque para disminuir el sangrado intraoperatorio. Los pacientes con HEB deben ser evaluados para descartar el s&iacute;ndrome de VHL y en casos confirmados la familia deber&iacute;a realizar la consulta gen&eacute;tica.
<p><strong>Palabras claves: </strong>Hemangioblastomas; Sistema nervioso central; Tratamiento quir&uacute;rgico, S&iacute;ndrome de von Hippel-lindau.</p>]]></dcterms:abstract>
    <dcterms:creator><![CDATA[Andrés Cervio]]></dcterms:creator>
    <dcterms:creator><![CDATA[Juan F. Villalonga]]></dcterms:creator>
    <dcterms:creator><![CDATA[Juan M. Liñares]]></dcterms:creator>
    <dcterms:creator><![CDATA[Rubén Mormandi]]></dcterms:creator>
    <dcterms:creator><![CDATA[Santiago Condomí Alcorta]]></dcterms:creator>
    <dcterms:creator><![CDATA[Jorge Salvat]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
    <dcterms:bibliographicCitation><![CDATA[BIBLIOGRAF&Iacute;A&nbsp;<ol>
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</ol>]]></dcterms:bibliographicCitation>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/121">
    <dcterms:title><![CDATA[Abordaje endonasal endoscópico a la base del cráneo: un estudio anatómico de sus alcances. Nuestra experiencia<br />
]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:abstract><![CDATA[<strong>RESUMEN<br /> Introducci&oacute;n</strong>: El abordaje endonasal endosc&oacute;pico permite un acceso a la base del cr&aacute;neo a trav&eacute;s de una cavidad natural. Mediante &eacute;l, es posible acceder a patolog&iacute;as que afectan tanto a las fosas anterior, media y posterior. A su vez, el &iacute;ndice de complicaciones postoperatorias es menor en comparaci&oacute;n con el abordaje endonasal microquir&uacute;rgico cl&aacute;sico.<br /> <strong>Objetivo:</strong> Describir exhaustivamente las diferentes fases del abordaje endonasal endosc&oacute;pico, resaltando sus principales reparos anat&oacute;micos, poniendo especial &eacute;nfasis en sus alcances a la amplia gama de patolog&iacute;as de la base del cr&aacute;neo. Se propone analizar la manera en la que fue aplicado dicho acceso en nuestra experiencia quir&uacute;rgica.<br /> <strong>Materiales y m&eacute;todos:</strong> Se realiza una descripci&oacute;n detallada de la anatom&iacute;a endosc&oacute;pica particular de cada fase del acceso endonasal a la base del cr&aacute;neo, echando luz sobre los principales reparos anat&oacute;micos se confeccion&oacute; finalmente un an&aacute;lisis retrospectivo en nuestra serie quir&uacute;rgica de 51 pacientes intervenidos v&iacute;a endosc&oacute;pica endonasal durante el lapso 2012 y marzo de 2015, evaluando los resultados de dichas intervenciones, la tasa de complicaciones y los controles por im.genes postoperatorios.<br /> <strong>Resultados:</strong> El abordaje endosc&oacute;pico a la base del cr&aacute;neo fue pasible de una detallada caracterizaci&oacute;n anat&oacute;mica. Mediante &eacute;l pudieron resolverse afecciones de la fosa craneal anterior (rabdomiosarcomas y meningiomas), media (de la regi&oacute;n selar y paraselar) y posterior (cordomas del clivus).<br /> Conclusi&oacute;n: El abordaje endonasal endosc&oacute;pico a la base del cr&aacute;neo no es tan solo complejo por sus numerosas fases sino tambi&eacute;n por los incontables reparos anat&oacute;micos que caracterizan a cada una de ellas. Dicho abordaje provee un acceso a la base del cr&aacute;neo mediante una cavidad anat&oacute;mica con una baja incidencia de complicaciones.
<p><strong>Palabras Clave: </strong>Abordaje Endonasal Endosc&oacute;pico; Endoscop&iacute;a de Base de Cr&aacute;neo; Anatom&iacute;a Endosc&oacute;pica; Reparos Anat&oacute;micos</p>]]></dcterms:abstract>
    <dcterms:creator><![CDATA[Román Pablo Arévalo]]></dcterms:creator>
    <dcterms:creator><![CDATA[Daniel Alejandro Seclen Voscoboinik]]></dcterms:creator>
    <dcterms:creator><![CDATA[Juan Martín Herrera]]></dcterms:creator>
    <dcterms:creator><![CDATA[Mauricio Gabriel Rojas Caviglia]]></dcterms:creator>
    <dcterms:creator><![CDATA[Walter Emanuel Vallejos Taccone]]></dcterms:creator>
    <dcterms:creator><![CDATA[Miguel Mural]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:rights><![CDATA[Asociación Argentina de Neurocirugía]]></dcterms:rights>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
    <dcterms:bibliographicCitation><![CDATA[<p><strong>BIBLIOGRAF&Iacute;A</strong></p>
<ol>
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</ol>]]></dcterms:bibliographicCitation>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/123">
    <dcterms:title><![CDATA[Metástasis craneal de carcinoma folicular de tiroides: a propósito de un caso]]></dcterms:title>
    <dcterms:subject><![CDATA[Neurocirugía]]></dcterms:subject>
    <dcterms:abstract><![CDATA[<p><strong>RESUMEN<br /> Introducci&oacute;n: </strong>Las met&aacute;stasis de cr&aacute;neo son raras, los m&aacute;s frecuentes son carcinoma de pulm&oacute;n, mama y pr&oacute;stata. Las de origen tiroideo son extremadamente raras, la mayor&iacute;a atribuida al subtipo folicular. El diagn&oacute;stico diferencial de tales lesiones, es esencial para el tratamiento y evoluci&oacute;n. Describimos un caso de met&aacute;stasis de calota por carcinoma folicular de tiroides.<br /> <strong>Material y m&eacute;todos:</strong> Paciente femenina, 60 a&ntilde;os de edad, sin APP conocidos. Consulto por masa subd&eacute;rmica a nivel occipital izquierda, firme, adherida a planos profundas de crecimiento gradual, de 3 a&ntilde;os de evoluci&oacute;n, asintom&aacute;tica. TAC e IRM: lesi&oacute;n expansiva intracraneal epidural y extracraneal osteol&iacute;tica a nivel parieto-occipital izquierdo de 34x68x52 mm. Angiograf&iacute;a cerebral: aferente principal arteria occipital posterior izquierda y drenaje venoso a seno longitudinal sin compromiso del mismo. Se realiza exeresis quir&uacute;rgica de lesi&oacute;n l&iacute;tica &oacute;sea extradural sin compromiso dural, macrosc&oacute;picamente completa y posterior craneoplast&iacute;a. Histol&oacute;gia: carcinoma folicular de tiroides.<br /> <strong>Resultados:</strong> La incidencia de carcinoma de tiroides representa aproximadamente el 1% de todos los tumores. El subtipo folicular, es el segundo en frecuencia (10-15%). La met&aacute;stasis craneal representa el 2,5% aproximadamente, siendo m&aacute;s frecuente en la regi&oacute;n occipital, seg&uacute;n la serie publicada por Nagamine et al. La edad media de presentaci&oacute;n fue de 60 a&ntilde;os y con preponderancia femenina. La propagaci&oacute;n del mismo es probablemente por v&iacute;a hemat&oacute;gena. Estos pueden tener una cl&iacute;nica silente. En las im&aacute;genes, se manifiestan como lesiones osteol&iacute;ticas altamente vascularizadas. En nuestro caso, se obtuvo el diagn&oacute;stico definitivo a trav&eacute;s de la anatom&iacute;a patol&oacute;gica, debido a que tanto las im&aacute;genes y la cl&iacute;nica, no nos suger&iacute;an secundarismo.<br /> <strong>Conclusi&oacute;n: </strong>A pesar de la poca frecuencia de esta patolog&iacute;a, no debe de ser subestimada a la hora de la extirpaci&oacute;n de este tipo de lesiones.</p>
<p><strong>Palabras Clave: </strong>Carcinoma de Tiroides; Met&aacute;stasis Craneal; Tumor</p>]]></dcterms:abstract>
    <dcterms:creator><![CDATA[Walter Arias]]></dcterms:creator>
    <dcterms:creator><![CDATA[Christian Genolet]]></dcterms:creator>
    <dcterms:creator><![CDATA[Danae Pietro]]></dcterms:creator>
    <dcterms:creator><![CDATA[Juan Sirena Talocchino]]></dcterms:creator>
    <dcterms:creator><![CDATA[Franco Nicola]]></dcterms:creator>
    <dcterms:creator><![CDATA[Angel Melchior<br />
]]></dcterms:creator>
    <dcterms:publisher><![CDATA[Jaime Rimoldi]]></dcterms:publisher>
    <dcterms:rights><![CDATA[Asociación Argentina de Neurocirugía]]></dcterms:rights>
    <dcterms:language><![CDATA[Español]]></dcterms:language>
    <dcterms:bibliographicCitation><![CDATA[<strong>BIBLIOGRAF&Iacute;A</strong><br /><ol>
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</ol>]]></dcterms:bibliographicCitation>
</rdf:Description><rdf:Description rdf:about="https://aanc.org.ar/ranc/items/show/124">
    <dcterms:title><![CDATA[RANC Volumen 29 Numero 3]]></dcterms:title>
</rdf:Description></rdf:RDF>
