Use of Neuroanatomic Knowledge and Neuronavigation System for a Safe Anterior Petrosectomy.

INTRODUCTION: The petroclival region is among the most challenging anatomical areas to deal with in skull base surgery. Drilling of the anterior part of the petrous bone during the anterior transpetrosal approach involves the risk of injury of the cochlea, superior semicircular canal, internal carotid artery, and internal auditory canal. A thorough understanding of the microneurosurgical anatomy of this region is mandatory to execute the transpetrosal approaches, decreasing the risk of complications. The aim of this study is to describe the anatomical structures of the petroclival region, highlighting the importance of neuronavigation for safe performance of the anterior transpetrosal approach. METHODS: Three adult cadaveric human heads were formalin-fixed and injected with colored silicone. They underwent an axial 1 mm slab CT scan, which was used for neuronavigation during the surgical approaches. The anterior petrosectomy was performed with the aid of neuronavigation during the drilling of the petrous bone. The surgical management of a patient harboring a petroclival meningioma, operated on using an anterior transpetrosal approach, was reported as an illustrative case. RESULTS: The anterior petrosectomy was completed accurately with wide exposure of the surgical target without injuring the cochlea and other structures in all three cadaveric specimens. In the surgical case, no approach-related complications occurred, and a gross total resection of the tumor was achieved. CONCLUSIONS: Deep knowledge of the location and relationships of the vital elements located within the temporal bone, along with the use of neuronavigation, are the key aspects to perform the anterior transpetrosal approach safely, reducing the risk of complications.

Neumoencéfalo a tensión, una extraña complicación del uso de oxígeno en neonatos. Descripción de un caso y revisión de la literatura / Tension pneumocephalus, an uncommon complication of oxygen therapy in preterm newborns. Presentation of a case and literature review

El neumoencéfalo a tensión es una complicación extremadamente rara en el uso de la ventilación a presión positiva en el neonato, cuyo diagnóstico requiere un alto grado de sospecha clínica. Presentamos el caso de un recién nacido prematuro, que recibió oxígeno a través de cánulas nasales de alto flujo debido a enfermedad de membrana hialina, propia de su prematuridad, y que desarrolló signos clínicos de hipertensión intracraneal. La ecografía transfontanelar y la TAC craneal pusieron de manifiesto un importante neumoencéfalo a tensión que fue evacuado a través de punción directa a través de la fontanela anterior (AU)

Tension pneumocephalus is an extremely rare complication of positive-pressure ventilation in neonates, the diagnosis of which requires a high degree of clinical suspicion. We present the case of a preterm newborn, who received high-flow nasal cannula oxygen therapy because of hyaline membrane disease, due to his prematurity, and developed clinical signs of intracranial hypertension. Transfontanellar ultrasound and cranial CT scan revealed significant tension pneumocephalus, which was evacuated with direct needle puncture through the anterior fontanelle (AU)

Tension pneumocephalus, an uncommon complication of oxygen therapy in preterm newborns. Presentation of a case and literature review. / Neumoencéfalo a tensión, una extraña complicación del uso de oxígeno en neonatos. Descripción de un caso y revisión de la literatura.

Tension pneumocephalus is an extremely rare complication of positive-pressure ventilation in neonates, the diagnosis of which requires a high degree of clinical suspicion. We present the case of a preterm newborn, who received high-flow nasal cannula oxygen therapy because of hyaline membrane disease, due to his prematurity, and developed clinical signs of intracranial hypertension. Transfontanellar ultrasound and cranial CT scan revealed significant tension pneumocephalus, which was evacuated with direct needle puncture through the anterior fontanelle.

Baclofeno intratecal para el tratamiento de la espasticidad: revisión de los casos presentes tratados en nuestro servicio / Intrathecal baclofen as a treatment for spasticity: Review of the cases treated in our hospital

Introducción: La espasticidad representa un problema médico cuya incidencia está aumentando debido a enfermedades como parálisis cerebral, ictus, esclerosis múltiple, traumatismos o encefalopatías, afectando tanto a adultos como a niños. Los tratamientos incluyen rehabilitación, farmacoterapia y cirugía, entre las cuales destacamos las bombas de baclofeno intratecal. Material y métodos: Seleccionamos a los pacientes portadores de bomba de baclofeno intratecal implantada en el Hospital Clínico de Santiago de Compostela entre 2005-2018 y analizamos retrospectivamente los resultados mediante escalas de valoración de espasticidad, como la de Ashworth, así como las complicaciones observadas. Resultados: Se implantaron bombas de baclofeno a 17 pacientes, obteniendo una mejoría de 2 puntos en la escala de Ashworth en el 88,2% y de 1 punto en la escala de Penn en el 94%. Se observaron complicaciones en 3 pacientes. Conclusiones: El tratamiento con baclofeno intratecal es una técnica sencilla con resultados muy positivos para mejorar la calidad de vida de pacientes con espasticidad

Introduction: Spasticity represents a medical problem whose incidence is increasing during the last years due to pathologies such as cerebral palsy, stroke, multiple sclerosis, trauma or encephalopathy, affecting both adults and children. The treatments include rehabilitation, pharmacotherapy and surgery, among which we highlight intrathecal baclofen infusion devices. Material and methods: Intrathecal baclofen devices implanted patients in Clinical Hospital of Santiago de Compostela from 2005 to 2018 were selected for retrospective analysis using assessment of spasticity scales, such as Ashworth scale. Complications are described. Results: Surgery was performed in 17 patients for baclofen pump implant, achieving an improvement of 2 points on the Ashworth Scale in 88,2% of the patients and of 1 point on the Penn Scale in 94%. Complications were seen in 3 patients. Conclusions: Intrathecal baclofen is a simple technique with good results for improving the quality of life of patients with spasticity

Intrathecal baclofen as a treatment for spasticity: Review of the cases treated in our hospital. / Baclofeno intratecal para el tratamiento de la espasticidad: revisión de los casos presentes tratados en nuestro servicio.

INTRODUCTION: Spasticity represents a medical problem whose incidence is increasing during the last years due to pathologies such as cerebral palsy, stroke, multiple sclerosis, trauma or encephalopathy, affecting both adults and children. The treatments include rehabilitation, pharmacotherapy and surgery, among which we highlight intrathecal baclofen infusion devices. MATERIAL AND METHODS: Intrathecal baclofen devices implanted patients in Clinical Hospital of Santiago de Compostela from 2005 to 2018 were selected for retrospective analysis using assessment of spasticity scales, such as Ashworth scale. Complications are described. RESULTS: Surgery was performed in 17 patients for baclofen pump implant, achieving an improvement of 2 points on the Ashworth Scale in 88,2% of the patients and of 1 point on the Penn Scale in 94%. Complications were seen in 3 patients. CONCLUSIONS: Intrathecal baclofen is a simple technique with good results for improving the quality of life of patients with spasticity.

Infarto cerebral tras apoplejía pituitaria: descripción de un caso y revisión de la literatura / Cerebral infarction after pituitary apoplexy: Description of a case and review of the literature

La apoplejía pituitaria es normalmente el resultado de un infarto hemorrágico que acontece a un adenoma hipofisario. La presentación clínica comprende un espectro muy amplio e incluye desde casos asintomáticos, el cuadro clínico clásico e incluso muerte súbita. La isquemia cerebral tras una apoplejía pituitaria ocurre muy raras veces. Se postulan como mecanismos etiopatogénicos el vasoespasmo y/o la compresión vascular arterial provocada por el propio tumor. En el presente artículo describimos un caso de apoplejía pituitaria asociada a infarto cerebral y discutimos la relación entre ambos eventos

Pituitary apoplexy is usually the result of haemorrhagic infarction in a pituitary adenoma. The clinical presentation varies widely and includes asymptomatic cases, classical pituitary apoplexy and even sudden death. Cerebral ischemia due to pituitary apoplexy is very rare. It may be caused by vasospasm or direct compression of cerebral vessels by the tumor. We report a case of pituitary apoplexy associated with cerebral infarction and discuss the relationship between the two events

[Cerebral infarction after pituitary apoplexy: Description of a case and review of the literature]. / Infarto cerebral tras apoplejía pituitaria: descripción de un caso y revisión de la literatura.

Pituitary apoplexy is usually the result of hemorrhagic infarction in a pituitary adenoma. The clinical presentation varies widely and includes asymptomatic cases, classical pituitary apoplexy and even sudden death. Cerebral ischemia due to pituitary apoplexy is very rare. It may be caused by vasospasm or direct compression of cerebral vessels by the tumor. We report a case of pituitary apoplexy associated with cerebral infarction and discuss the relationship between the two events.

Hematoma subdural crónico bilateral: análisis de una serie de 190 pacientes / Bilateral chronic subdural haematoma: Analysis of a series of 190 patients

Objetivos: Analizar las características clínicas, los factores de recidiva y el resultado quirúrgico de un grupo de pacientes con hematoma subdural crónico bilateral (HSCB) y compararlos con una serie de hematomas subdurales crónicos unilaterales (HSCU). Pacientes y métodos: Estudio retrospectivo que incluye a 1.523 pacientes, tratados quirúrgicamente durante un período de 30 años, de un hematoma subdural crónico. Los pacientes se dividieron en 2 grupos: el de estudio formado por 190 pacientes que presentaban un HSCB y el control formado por 1.333 pacientes que presentaban un HSCB. Resultados: La serie de estudio está formada por 126 varones (66,3%) y 64 mujeres (33,7%) con una edad media de 74,8±10,2 años. En el grupo control hay 870 varones (65,2%) y 463 mujeres (34,8%) con una edad media de 73,2% ± 12,1. El síntoma de inicio más frecuente fue el deterioro cognitivo en 63 pacientes (33,2%) en los bilaterales y en 416 (29,5%) en los unilaterales. Se produjeron 18 casos de recidiva (9,4%) en los bilaterales y 77 (5,7%) en los unilaterales (p = 0,027). La mortalidad fue de 10 casos (5,2%) en los bilaterales y de 55 (4%) en el grupo control. Se encontraron como factores significativos de recidiva: sexo masculino (p = 0,022), la ingesta de fármacos anticoagulantes/antiagregantes (p = 0,032) y la mala situación clínica al ingreso (p = 0,039). Conclusiones: El HSCB afecta de manera importante a los varones y la forma de presentación más habitual es la cefalea. Los factores más importantes que influyen en las recidivas son el sexo masculino, la ingesta de fármacos anticoagulantes/antiagregantes y la peor situación clínica al ingreso. Los índices de recidiva fueron significativamente superiores a los unilaterales

Objective: The aim of this study is to analyse the clinical findings and surgical results in a series of patients with bilateral chronic subdural haematoma (BCSDH), and compare the results with a series of patients treated for unilateral chronic subdural haematoma (UCSDH). Patients and methods: A retrospective study was performed on 1523 patients diagnosed and surgically treated for chronic subdural haematoma over a period of 30 years. Patients were divided into 2 groups: The study group consisting of 190 patients operated on for a BCSDH and the control group consisting of patients operated on for an UCSDH (1333 cases). Results: The patient series included 126 males (66.3%) and 64 females (33.7%), with a mean age at diagnosis of 74.8 ± 10.2. The control group consisted of 870 males (65.2%) and 463 women (34.8%), with a mean age of 73.2 ± 12.1. The most common presenting symptoms was cognitive impairment in 63 patients (33.2%) with BCSDH and 416 (29.5%) with UCSDH. Recurrence rates were 9.4% (18 patients) and 5.7% (77 patients) in unilateral and bilateral haematomas, respectively. The mortality was 10 patients (5.2%) with BCSDH and 55(4%) with UCSDH. Factors significantly related to recurrence in the univariate analysis were being male (P = .040), anticoagulant/antiplatelet therapy (P = .032), and poor neurological status at admission (P = .039). Conclusions: This study indicates that BCSDH is more frequent in males, and the most common presentation is headache. The most important factors influencing recurrences are being male, intake of anticoagulant-antiaggregant drugs, and worse clinical status at admission

[Bilateral chronic subdural haematoma: Analysis of a series of 190 patients]. / Hematoma subdural crónico bilateral: análisis de una serie de 190 pacientes.

OBJECTIVE: The aim of this study is to analyse the clinical findings and surgical results in a series of patients with bilateral chronic subdural haematoma (BCSDH), and compare the results with a series of patients treated for unilateral chronic subdural haematoma (UCSDH). PATIENTS AND METHODS: A retrospective study was performed on 1523 patients diagnosed and surgically treated for chronic subdural haematoma over a period of 30 years. Patients were divided into 2 groups: The study group consisting of 190 patients operated on for a BCSDH and the control group consisting of patients operated on for an UCSDH (1333 cases). RESULTS: The patient series included 126 males (66.3%) and 64 females (33.7%), with a mean age at diagnosis of 74.8±10.2. The control group consisted of 870 males (65.2%) and 463 women (34.8%), with a mean age of 73.2±12.1. The most common presenting symptoms was cognitive impairment in 63 patients (33.2%) with BCSDH and 416 (29.5%) with UCSDH. Recurrence rates were 9.4% (18 patients) and 5.7% (77 patients) in unilateral and bilateral haematomas, respectively. The mortality was 10 patients (5.2%) with BCSDH and 55(4%) with UCSDH. Factors significantly related to recurrence in the univariate analysis were being male (P=.040), anticoagulant/antiplatelet therapy (P=.032), and poor neurological status at admission (P=.039). CONCLUSIONS: This study indicates that BCSDH is more frequent in males, and the most common presentation is headache. The most important factors influencing recurrences are being male, intake of anticoagulant-antiaggregant drugs, and worse clinical status at admission.

Diagnóstico por imagen de los quistes aracnoideos / Imaging diagnosis of arachnoid cysts

Los quistes aracnoideos son lesiones quísticas malformativas que contienen en su interior un líquido de características similares al líquido cefalorraquídeo. Constituyen alrededor del 1% de todos los procesos ocupantes de espacio a nivel intracraneal y, en los últimos años, su incidencia se ha incrementado ligeramente debido a la mejora en las técnicas de diagnóstico radiológico. Aunque la mayoría de los quistes aracnoideos se sitúan en la cavidad craneal, especialmente en la región de la cisura de Silvio, un menor número de casos pueden localizarse a nivel espinal. Realizamos una revisión sobre las diferentes técnicas de diagnóstico por imagen de los quistes aracnoideos, analizando la indicación de cada una de ellas en función de la localización y edad de los pacientes

Arachnoid cysts are malformed lesions that contain a fluid similar to the cerebrospinal fluid, and are usually located within the arachnoidal membrane. They represent 1% of all intracranial lesions, and in recent years, with the development of radiological techniques, the clinical detectability of arachnoid cysts seems to have increased. Although the majority of diagnosed arachnoid cysts are located in the cranial cavity and especially in the Sylvian fissure, a small number are located at spinal level and they can occur extra- or intra-spinally. An analysis is carried out, detailing the various tests used for the diagnosis of both intracranial and spinal arachnoids cysts, analysing the indications of each one depending on the location of the cysts and patient age

Malformación arteriovenosa intracraneal múltiple / Multiple intracranial arteriovenous malformation

Las malformaciones arteriovenosas (MAV) cerebrales múltiples son poco frecuentes y la mayoría de las publicaciones existentes presentan casos clínicos aislados. Su incidencia en grandes series de MAV oscila entre el 0,3 y 9%, y en la mayoría de casos aparecen asociadas con otras anomalías vasculares del cerebro u otros tejidos. Presentamos el caso clínico de una mujer de 62 años que sufrió una hemorragia parenquimatosa temporal izquierda y que en los estudios neuro-radiológicos se evidenciaron 3 MAV localizadas en: lóbulo temporal izquierdo, hemisferio cerebeloso izquierdo y lóbulo temporal derecho. Las lesiones fueron tratadas con radiocirugía

Multiple cerebral arteriovenous malformations (AVMs) are thought to be exceedingly rare lesions and have usually been reported as single cases. The incidence of multiple cerebral AVMs in major series ranges from 0.3% to 9% and, in the majority of cases, these malformations are associated with other vascular anomalies of the brain or soft tissues. We report a 62-year-old woman that presented with a left temporal haemorrhage. Angiography showed 3 AVMs located in the left temporal lobe, left cerebellar hemisphere and right temporal lobe. The lesions were treated with radiosurgery

[Imaging diagnosis of arachnoid cysts]. / Diagnóstico por imagen de los quistes aracnoideos.

Arachnoid cysts are malformed lesions that contain a fluid similar to the cerebrospinal fluid, and are usually located within the arachnoidal membrane. They represent 1% of all intracranial lesions, and in recent years, with the development of radiological techniques, the clinical detectability of arachnoid cysts seems to have increased. Although the majority of diagnosed arachnoid cysts are located in the cranial cavity and especially in the Sylvian fissure, a small number are located at spinal level and they can occur extra- or intra-spinally. An analysis is carried out, detailing the various tests used for the diagnosis of both intracranial and spinal arachnoids cysts, analysing the indications of each one depending on the location of the cysts and patient age.

Desarrollo «de novo» de un quiste aracnoideo supraselar / «De novo» development of a suprasellar arachnoid cyst

Los quistes aracnoideos (QA) intracraneales son lesiones quísticas formados a partir de las aracnoides y que tienen una prevalencia entre el 1-2% en la población pediátrica. Presentamos el caso clínico de un niño de 2 años que presentó inestabilidad para la marcha y episodios de desviación ocular; al nacimiento se le había realizado una ecografía transfontanelar que fue normal. Se le practicó una tomografía computarizada (TC) y resonancia magnética (RM) que evidenciaron un quiste aracnoideo supraselar acompañado de importante hidrocefalia. Se realizó una fenestración endoscópica del quiste con remisión completa de la sintomatología. En la revisión de la literatura únicamente hemos encontrado 6 casos previos de QA sin un origen congénito o traumático, y exclusivamente uno de ellos de localización supraselar. Analizamos las características clínicas, radiológicas y el tratamiento en los casos publicados con anterioridad

Intracranial arachnoid cysts are fluid-filled cavities that arise within the cranial arachnoid, representing approximately 1%-2% of all intracranial lesions among the paediatric population. We present the case of a 2-year-old boy who presented with instability and episodes of ocular deviation. A computed tomography scan (CT scan) and magnetic resonance imaging (MRI) of the brain revealed a suprasellar cyst and obstructive hydrocephalus. At birth a transfontanellar ultrasound was normal. The cyst underwent endoscopic fenestration with complete remission of symptoms. In the review of the literature, we found only 6 previous cases of an intracranial arachnoid cyst whose origin was not clearly congenital or traumatic, and ours is the second case of a suprasellar arachnoid cyst to arise de novo. The clinical features, imaging characteristics and treatment of the previously reported cases are discussed

[«De novo¼ development of a suprasellar arachnoid cyst]. / Desarrollo «de novo¼ de un quiste aracnoideo supraselar.

Intracranial arachnoid cysts are fluid-filled cavities that arise within the cranial arachnoid, representing approximately 1%-2% of all intracranial lesions among the paediatric population. We present the case of a 2-year-old boy who presented with instability and episodes of ocular deviation. A computed tomography scan (CT scan) and magnetic resonance imaging (MRI) of the brain revealed a suprasellar cyst and obstructive hydrocephalus. At birth a transfontanellar ultrasound was normal. The cyst underwent endoscopic fenestration with complete remission of symptoms. In the review of the literature, we found only 6 previous cases of an intracranial arachnoid cyst whose origin was not clearly congenital or traumatic, and ours is the second case of a suprasellar arachnoid cyst to arise de novo. The clinical features, imaging characteristics and treatment of the previously reported cases are discussed.

[Multiple intracranial arteriovenous malformation]. / Malformación arteriovenosa intracraneal múltiple.

Multiple cerebral arteriovenous malformations (AVMs) are thought to be exceedingly rare lesions and have usually been reported as single cases. The incidence of multiple cerebral AVMs in major series ranges from 0.3% to 9% and, in the majority of cases, these malformations are associated with other vascular anomalies of the brain or soft tissues. We report a 62-year-old woman that presented with a left temporal haemorrhage. Angiography showed 3 AVMs located in the left temporal lobe, left cerebellar hemisphere and right temporal lobe. The lesions were treated with radiosurgery.

La fenestración endoscópica como tratamiento de los quistes aracnoideos intracraneales / Endoscopic fenestration to treat intracranial arachnoid cysts

Los quistes aracnoideos son lesiones quísticas con un contenido similar al líquido cefalorraquídeo. Representan alrededor del 1% de todas las lesiones expansivas intracraneales y son característicos de las dos primeras décadas de la vida, aunque en ocasiones se diagnostican en adultos. Presentamos una revisión sobre nuestra experiencia en el tratamiento quirúrgico de quistes aracnoideos intracraneales. Material y métodos: Realizamos una revisión de 103 niños menores de 16 años intervenidos quirúrgicamente por un quiste aracnoideo intracraneal en los que se empleó una derivación cistoperitoneal en 53 casos; una craneotomía con fenestración del quiste, en 44 niños, y 11 casos con fenestración por vía endoscópica. Resultados: En todos los pacientes se consiguió alivio de la sintomatología y reducción o desaparición del quiste. Se presentaron 21 complicaciones quirúrgicas: 12 en los pacientes tratados con válvula (22.6%) y 9 en los sometidos a craneotomía (20.4%). La mortalidad de la serie fue de dos casos (1.95%). Discusión y conclusiones: El tratamiento de los quistes aracnoideos intracraneales debe reservarse exclusivamente para los casos sintomáticos. La craneotomía con fenestración de las membranas y la derivación cistoperitoneal son buenas opciones de tratamiento, ya que consiguen un buen control, tanto del tamaño del quiste como en la resolución de la sintomatología. La mejor opción terapéutica es en la actualidad la fenestración endoscópica, ya que se trata de una técnica poco invasiva, que no requiere la implantación de materiales extraños y cuyo índice de complicaciones y recidivas es relativamente bajo...

Cordoma sacrococcígeo / No disponible

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Meningioma de células claras lumbosacro multifocal. Presentación de un caso y revisión de la literatura / No disponible

El meningioma de células claras es una variedad infrecuente de meningioma. Se describe el caso de un meningioma espinal multifocal de células claras presente en una paciente de 20 años de edad. Clínicamente refiere lumbalgia de aproximadamente 2 años de evolución. En el estudio de resonancia magnética nuclear (RMN) se evidencia gran tumoración lumbosacra, que ocupa el canal raquídeo de L4 a S2, asociada a 2 lesiones satélites en la región lumbar. Una tumoración intra-extradural fue resecada quirúrgicamente, confirmándose el diagnóstico anatomopatológico de meningioma de células claras. Se resecan así mismo ambas lesiones satélites con idéntico diagnóstico histológico. Por tanto, en pacientes jóvenes con lesión espinal sugestiva de meningioma debe considerarse la posibilidad de que se trate de un meningioma de células claras, así como su probable origen multifocal y la probabilidad de recidivas (AU)