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1.
Br J Neurosurg ; 37(5): 1406-1409, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33538190

RESUMO

PURPOSE: The purpose of this study was to evaluate a fast, sutureless technique to repair anterior cervical dural tears. Anterior cervical discectomy and fusion (ACDF) is a commonly performed procedure for the treatment of cervical degenerative diseases. Although uncommon, incidental durotomy with cerebrospinal fluid (CSF) leak during ACDF is a potentially serious complication. Yet, its technical management for the prevention of CSF leak is controversial. METHODS: Between September 2012 and June 2018 we encountered seven cases (2 female/5 male) presenting with intraoperative CSF leaks secondary to incidental dural tears during ACDF surgery. All the cases were surgically treated using a topical fibrin sealant patch (TachoSil) with high adesive strength and fibrin glue (Tisseel). Intraoperative source of leakage, time to leakage control, quantity of Sealant Sponge used and postoperative complications were evaluated. RESULTS: Dural tears were tipically the result of dissection of adherent posterior longitudinal ligament and/or calcified disc from the cervical dural sac to allow full decompression of the spinal cord. Effective repair of dural tear defined as cessation of CSF leak after topical sealant agents application was achieved no later than one minute in all cases. Evident clinical and/or radiological postoperative CSF leak was used to determine the patient's postoperative result. Postoperative CSF leak was not evident during a minimum 6 months follow up. CONCLUSIONS: In the present study, we have reported our experience with a new sealing technique to manage CSF leaks from iatrogenic cervical dural lacerations. Tachosil tissue sealant patch is a rapid sutureless technique that may help in repairing introperatively incidental dural tears, thus reducing the risk of postoperative CSF leaks. To our knowledge, this is the first series to report the use of Tachosil adhesive sealant patch for the treatment of incidental dural tears during anterior cervical discectomy.


Assuntos
Vazamento de Líquido Cefalorraquidiano , Vértebras Cervicais , Humanos , Masculino , Feminino , Vazamento de Líquido Cefalorraquidiano/etiologia , Vazamento de Líquido Cefalorraquidiano/cirurgia , Vértebras Cervicais/cirurgia , Fibrinogênio/uso terapêutico , Discotomia/efeitos adversos , Complicações Pós-Operatórias/etiologia , Adesivo Tecidual de Fibrina/uso terapêutico , Dura-Máter/cirurgia
3.
J Neurooncol ; 154(1): 101-112, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34255272

RESUMO

PURPOSE: Intradural extramedullary spinal metastases (IESM) represent an extremely rare manifestation of systemic cancer. We evaluated the surgical indications, complications and outcome in a series of 43 patients with solitary intradural extramedullary metastases originating from solid cancer of non-neurogenic origin. METHODS: Patients' age, histopathological diagnoses of primary cancer, tumor size, spinal location, and extramedullary tumor dissemination were collected. Preoperative functional status, pre- and post-operative neurological status, extent of the tumor resection were also analyzed. RESULTS: The majority of IEMS occurred in the thoracic area, with the most common presenting symptoms ranging from motor (76.7%) to sensory (72%) deficits. Gross total resection was achieved in 55.8% of cases, while In 44.2% of patients a subtotal resection was performed due to strong adherence between the tumor and neural tissue. After surgery, 72.1% of patients exhibited improvement of symptoms in terms of pain relief and partial recovery of motor and/or sensory deficits, while neurologic functional status was severely affected postoperatively in 3 patients. CONCLUSION: Although there was no statistical significance between the different parameters and overall survival, KPS and the presence of other metastases were the strongest prognostic factors for overall survival and postoperative neurologic outcome.


Assuntos
Segunda Neoplasia Primária , Neoplasias da Medula Espinal , Humanos , Segunda Neoplasia Primária/cirurgia , Neoplasias da Medula Espinal/cirurgia , Resultado do Tratamento
4.
Neurosurg Rev ; 44(6): 3267-3275, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33564982

RESUMO

Intramedullary spinal cord metastasis (ISCM) is a rare event in the course of advanced malignancy. Management of these lesions remains controversial. Recently, surgery for ISCM has been advocated for selected patients. We performed a retrospective analysis of the clinical course, complications, and outcome of 30 patients surgically treated for ISCM. Patients' age, histopathological diagnoses of primary cancer, tumor size, spinal location, and extramedullary tumor dissemination were collected. Preoperative functional status, pre- and postoperative neurological status, and extent of the tumor resection were also analyzed. Predominant tumor location was thoracic, followed by cervical and conus medullaris. Lung cancer constituted the majority of primary malignancies. In 9 cases, one of the indications for spinal surgery was to obtain a histopathological diagnosis. On admission, all patients presented with neurological symptoms suggestive of myelopathy. After surgery, 18 patients exhibited improvement of symptoms in terms of pain relief and partial recovery of motor and/or sensory deficits; 6 patients were unchanged, while 6 patients exhibited postoperative deterioration. Median survival time after surgery was 9.9 months. Age > 70 years old, presence of systemic metastases, preoperative neurological non functional status, and lung cancer as primary tumor were all factors associated with a worse survival prognosis. This study did not show a clear survival difference between gross total and subtotal ISCM tumor resection. Patients who underwent gross total resection had a worse functional outcome with respect to patients with only partial resection. Gross total resection with low morbidity must be the surgical target, but when not possible, subtotal resection and adjuvant therapy are a valid therapeutic option.


Assuntos
Neoplasias da Medula Espinal , Idoso , Humanos , Procedimentos Neurocirúrgicos , Prognóstico , Estudos Retrospectivos , Neoplasias da Medula Espinal/cirurgia , Resultado do Tratamento
5.
World Neurosurg ; 149: e1017-e1025, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33476784

RESUMO

BACKGROUND: Primary central nervous system lymphoma (PCNSL) is a rare manifestation of aggressive extranodal non-Hodgkin lymphoma. In patients with deep-seated lesions, stereotactic brain biopsy (SBB) is an accepted diagnostic procedure to obtain histopathologic confirmation. OBJECTIVE: The aim of this study was to assess the feasibility, diagnostic yield, safety, and complications of stereotactic procedures in midline and deep-seated PCNSLs. METHODS: Patients selected had received a histopathologic diagnosis of PCNSL localized in deep-seated midline structures, obtained by SBB. The intraoperative frozen section was executed as an integral part of the procedure. Computed tomography scan was performed after surgery. RESULTS: A total of 476 SBBs were performed between January 2000 and December 2019 . Of these SBBs, 91 deep-seated lesions had a histologic diagnosis of PCNSL. A significant increase of the incidence of PCNSL compared with all other diseases was observed (P < 0.0001). Eight patients (8.7%) showed a symptomatic hemorrhage, 4 of whom required craniotomy. There were 4 deaths and 2 cases of permanent morbidity. The hemorrhage risk in the PCNSL group was statistically significant (P = 0.0003) compared with other histotypes. CONCLUSIONS: In suspected cases of PCNSL, a histopathologic diagnosis is necessary to distinguish it from glioblastoma or other, nonmalignant conditions. Deep-seated PCNSLs present a higher risk of biopsy-related morbidity and mortality. Intraoperative frozen section increases the diagnostic yield and reduces the number of sampling procedures. Postoperative computed tomography seems to be warranted in patients with suspected PCNSL.


Assuntos
Biópsia/efeitos adversos , Biópsia/métodos , Neoplasias do Sistema Nervoso Central/cirurgia , Hemorragias Intracranianas/etiologia , Hemorragias Intracranianas/cirurgia , Linfoma/cirurgia , Técnicas Estereotáxicas , Adulto , Idoso , Biópsia/mortalidade , Neoplasias do Sistema Nervoso Central/diagnóstico por imagem , Neoplasias do Sistema Nervoso Central/mortalidade , Craniotomia , Feminino , Humanos , Hemorragias Intracranianas/mortalidade , Linfoma/diagnóstico por imagem , Linfoma/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
6.
Br J Neurosurg ; 35(1): 18-21, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32138540

RESUMO

PURPOSE: Decompressive craniectomy (DC) is widely used to treat raised intracranial pressure (ICP) in cranial trauma and stroke. It is accompanied by numerous complications. The aim of our study is to assess the surgical treatment of infections related to the use of a dural substitute with concurrent CSF leakage performed at our institution. MATERIAL AND METHODS: A retrospective analysis of a series of 72 patients who underwent DC between 2011 and 2017 was performed. Seven cases (9%) showed infection related to the use of xenograft (bovine pericardium) and coexisting CSF leakage. Epidural/subdural empyemas were observed in seven cases; three in conjunction with an intracerebral abscess. For reconstruction, free anterolateral thigh fascia lata flaps were used, based on the size of the defect. RESULTS: After removal of the dural substitute and the implant of free fascia lata, infection and CSF leaks resolved in all. An anatomopathological examination of the implant at the later time of cranioplasty (CP) showed the tissue had become vascularized exhibiting integration with the native dura. No complications related to the harvesting of the fascia lata were observed. CONCLUSIONS: Fascia lata is a validated source of autologous grafts; it is cost-free and would appear to be the biological material most similar to the dura mater. The implanted material appears to maintain a lasting vitality when covered over with a well-vascularized scalp, even after a period of months, achieving a successful suppression of infection. Subsequent skull reconstruction is performed safely and easily using artificial bone.


Assuntos
Craniectomia Descompressiva , Procedimentos de Cirurgia Plástica , Animais , Bovinos , Craniectomia Descompressiva/efeitos adversos , Dura-Máter/cirurgia , Fascia Lata , Humanos , Estudos Retrospectivos , Crânio/cirurgia
7.
Neurosurg Focus ; 49(2): E14, 2020 08.
Artigo em Inglês | MEDLINE | ID: mdl-32738795

RESUMO

OBJECTIVE: The goal of this study was to compare the clinical and radiological outcomes between fenestrated pedicle screws augmented with cement and expandable pedicle screws in percutaneous vertebral fixation surgical procedures for the treatment of degenerative and traumatic spinal diseases in aging patients with osteoporosis. METHODS: This was a prospective, single-center study. Twenty patients each in the expandable and cement-augmented screw groups were recruited. Clinical outcomes included visual analog scale (VAS), Oswestry Disability Index (ODI), and satisfaction rates. Radiographic outcomes comprised radiological measurements on the vertebral motion segment of the treated levels. Intraoperative data including complications were collected. All patients completed the clinical and radiological outcomes. Outcomes were compared preoperatively and postoperatively. RESULTS: An average shorter operative time was found in procedures in which expandable screws were used versus those in which cement-augmented screws were used (p < 0.001). No differences resulted in perioperative blood loss between the 2 groups. VAS and ODI scores were significantly improved in both groups after surgery. There was no significant difference between the 2 groups with respect to baseline VAS or ODI scores. The satisfaction rate of both groups was more than 85%. Radiographic outcomes also showed no significant difference in segment stability between the 2 groups. No major complications after surgery were seen. There were 4 cases (20%) of approach-related complications, all in fenestrated screw procedures in which asymptomatic cement extravasations were observed. In 1 case the authors detected a radiologically evident osteolysis around a cement-augmented screw 36 months after surgery. In another case they identified a minor loosening of an expandable screw causing local back discomfort at the 3-year follow-up. CONCLUSIONS: Expandable pedicle screws and polymethylmethacrylate augmentation of fenestrated screws are both safe and effective techniques to increase the pullout strength of screws placed in osteoporotic spine. In this series, clinical and radiological outcomes were equivalent between the 2 groups. To the authors' knowledge, this is the first report comparing the cement augmentation technique versus expandable screws in the treatment of aging patients with osteoporosis.


Assuntos
Cimentos Ósseos/uso terapêutico , Procedimentos Cirúrgicos Minimamente Invasivos/tendências , Osteoporose/diagnóstico por imagem , Osteoporose/cirurgia , Parafusos Pediculares/tendências , Polimetil Metacrilato/administração & dosagem , Fusão Vertebral/tendências , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Envelhecimento , Cimentos Ósseos/efeitos adversos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente Invasivos/efeitos adversos , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Parafusos Pediculares/efeitos adversos , Polimetil Metacrilato/efeitos adversos , Estudos Prospectivos , Fusão Vertebral/efeitos adversos , Fusão Vertebral/métodos , Resultado do Tratamento
8.
Clin Neurol Neurosurg ; 191: 105705, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32035359

RESUMO

OBJECTIVES: Chronic subdural hematoma (CSDH) is one of the most common diseases in the routine neurosurgical practice. The most usual procedures for CSDH treatment include single or multiple burr hole drainage craniectomy. There is still controversy, however, about the risks and benefits of the different surgical approaches and types of drainage. The aim of the current study is to evaluate the postoperative complications of the various surgical techniques of CSDH. PATIENTS AND METHODS: We conducted a single center retrospective analysis on 414 patients surgically treated for CSDH over a period of 6 years. Comparisons were made after dividing the patients into 4 groups based on the surgical technique and type of drainage: Single burr hole with subdural drainage (Group Ia), single burr hole with subgaleal drainage (Group Ib), craniotomy with subdural drainage (Group IIa), and craniotomy with subgaleal drainage (Group IIb). 238 cases underwent burr hole with irrigation, while 290 cases were treated with craniotomy. Of the analysed patients, subdural drainage was inserted in 382 cases, while subgaleal drain was used only in 146 patients, for a total of 528 procedures. RESULTS: Re-operation was performed in 9.47 % of cases. The frequency of re-intervention for recurrences appeared to be lower in the Group I a (5.06 %), while the frequency of the re-intervention was higher in the craniotomy with subdural drainage group (Group IIa, 11.6 %). 14 patients (2.65 %) developed acute subdural rebleeding in the immediate postoperative period with 6 of them on antiplatelets/anticoagulants in the preoperative period. CONCLUSION: Recurrence rate and functional outcome after surgical drainage of CSDH does not appear to be affected by surgical technique (craniotomy vs burrhole) and drainage location. To our opinion, surgeons may elect procedures on a case-by-case basis.


Assuntos
Anticoagulantes/uso terapêutico , Craniotomia/métodos , Drenagem/métodos , Hematoma Subdural Crônico/cirurgia , Inibidores da Agregação Plaquetária/uso terapêutico , Hemorragia Pós-Operatória/epidemiologia , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos Neurocirúrgicos/métodos , Recidiva
9.
Clin Neurol Neurosurg ; 174: 101-107, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30227295

RESUMO

OBJECTIVE: In recent decades, frame-based (FBB) and frame-less stereotactic brain biopsy (FLB) have played a crucial role in defining the diagnosis and management of expanding intracranial lesions in critical areas. During the same period, there have been significant advances in diagnostic imaging, a shift in surgical strategies towards extensive resection in gliomas and new molecular classification of brain tumors. Taking these advances into account, we have evaluated whether significant changes have occurred over the last sixteen years of our clinical practice in terms of frequency, indications, target selection, and the histologic results of stereotactic brain biopsy (SBB) procedures. PATIENTS AND METHODS: We analyzed a series of 421 SBB cases treated between January 2002 and June 2017 in three major neurosurgical institutes in Rome, serving a total of 1.5 million people. Within this series, 94.8% of patients underwent FBB, while, more recently, FLB was performed in 5.2% of cases. The entire period under consideration, running from 2002 to 2017, has been further stratified into four-year time-frames (2002-2005, 2006-2009, 2010-2013, 2014-2017) for the purpose of analysis. RESULTS: The diagnostic yield was 97%. Final diagnoses revealed tumors in 90% of cases and non-neoplastic masses in 7%, while 3% of cases were not conclusive. The morbidity rate was 3% (12 cases) and mortality was 0.7% (3 cases). Intra-operative frozen sections were made in 78% of biopsies. In our three institutes, the number of SBBs decreased steadily throughout the time-frames under consideration. We have also observed a statistically significant reduction in biopsy procedures in lobar lesions, while those performed on the basal ganglia increased and the number of SBBs of multiple masses and lesions of the corpus callosum remained stable. Primary central nervous system diagnosis of lymphomas (PCNSL) was the sole diagnosis whose incidence increased significantly. CONCLUSIONS: Over the last sixteen years, we have witnessed a significant decrease in SBB procedures and a modification in target selection and histologic results. Despite the significant evolution of neuroimaging, an accurate non-invasive diagnosis of intracranial expanding lesions has not yet been achieved. Furthermore, the most recent WHO classification of brain tumors (2016), which incorporates molecular and morphological features, has boosted the need for molecular processing of tissue samples in all expanding brain lesions. For these reasons, it is likely that SBBs will continue to be performed in specific cases, playing a significant role in diagnostic confirmation by providing tissue samples, so as to better assess the biology and the prognosis of cerebral lesions, as well as their sensitivity to standard radio-chemotherapy or to new molecular target therapies.


Assuntos
Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/cirurgia , Glioma/diagnóstico por imagem , Glioma/cirurgia , Técnicas Estereotáxicas/tendências , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Biópsia/métodos , Biópsia/tendências , Neoplasias Encefálicas/epidemiologia , Criança , Pré-Escolar , Feminino , Glioma/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Cidade de Roma/epidemiologia , Resultado do Tratamento , Adulto Jovem
10.
Surg Technol Int ; 30: 468-476, 2017 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-28182825

RESUMO

Intraoperative hemostasis during neurosurgical procedures is one of the most important aspects of intracranial surgery. Hemostasis is mandatory to keep a clean operative field and to prevent blood loss and postoperative hemorrhage. In neurosurgical practice, biosurgical hemostatic agents have proved to be extremely useful to complete the more classic use of electrocoagulation. During recent years, many biosurgical topical hemostatic agents were created. Although routinely used during neurosurgical procedures, there is still a great deal of confusion concerning optimal use of these products, because of the wide range of products, as absorbable topical agents, antifibrinolytics agents, fibrin sealants and hemostatic matrix, which perform their hemostatic action in different ways. The choice of the hemostatic agent and the strategy for local hemostasis are correlated with the neurosurgical approach, the source of bleeding, and the neurosurgeon's practice. In this study, the authors review all the different sources of bleeding during intracranial surgical approaches and analyze how to best choose the right topical hemostatic agent to stop bleeding, from the beginning of the surgical approach to the end of the extradural hemostasis after dural closure, along all the steps of the neurosurgical procedure.


Assuntos
Hemostáticos , Hemorragias Intracranianas , Procedimentos Neurocirúrgicos/efeitos adversos , Celulose Oxidada , Combinação de Medicamentos , Fibrinogênio , Hemostáticos/administração & dosagem , Hemostáticos/efeitos adversos , Hemostáticos/uso terapêutico , Humanos , Hemorragias Intracranianas/tratamento farmacológico , Hemorragias Intracranianas/prevenção & controle , Trombina
12.
Neurosurg Focus ; 39(4): E14, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26424338

RESUMO

OBJECT Spacers placed between the lumbar spinous processes represent a promising surgical treatment alternative for a variety of spinal pathologies. They provide an unloading distractive force to the stenotic motion segment, restoring foraminal height, and have the potential to relieve symptoms of degenerative disc disease. The authors performed a retrospective, multicenter nonrandomized study consisting of 1108 patients to evaluate implant survival and failure modes after the implantation of 8 different interspinous process devices (IPDs). METHODS The medical records of patients who had undergone placement of an IPD were retrospectively evaluated, and demographic information, diagnosis, and preoperative pain levels were recorded. Preoperative and postoperative clinical assessments in the patients were based on the visual analog scale. A minimum of 3 years after IPD placement, information on long-term outcomes was obtained from additional follow-up or from patient medical and radiological records. RESULTS One thousand one hundred eight patients affected by symptomatic 1- or 2-level segmental lumbar spine degenerative disease underwent placement of an IPD. The complication rate was 7.8%. There were 27 fractures of the spinous process and 23 dura mater tears with CSF leakage. The ultimate failure rate requiring additional surgery was 9.6%. The reasons for revision, which always involved removal of the original implant, were acute worsening of low-back pain or lack of improvement (45 cases), recurrence of symptoms after an initial good outcome (42 cases), and implant dislocation (20 cases). CONCLUSIONS The IPD is not a substitute for a more invasive 3-column fusion procedure in cases of major instability and spondylolisthesis. Overdistraction, poor bone density, and poor patient selection may all be factors in the development of complications. Preoperatively, careful attention should be paid to bone density, appropriate implant size, and optimal patient selection.


Assuntos
Descompressão Cirúrgica/instrumentação , Descompressão Cirúrgica/métodos , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Próteses e Implantes/efeitos adversos , Falha de Prótese/efeitos adversos , Adulto , Idoso , Europa (Continente)/epidemiologia , Feminino , Humanos , Degeneração do Disco Intervertebral/cirurgia , Vértebras Lombares/cirurgia , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Estudos Retrospectivos , Análise de Sobrevida , Adulto Jovem
13.
Neurosurgery ; 11 Suppl 2: 32-6; discussion 36, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25584959

RESUMO

BACKGROUND: Significant hemorrhage may occur from the cerebral venous sinuses during the dural separation from the bone flap, particularly in elderly patients. It is important to achieve an urgent hemostatic control. OBJECTIVE: To evaluate the efficacy and safety of a new fixed combination tissue sealant (TachoSil) in patients with bleeding from lacerations of cerebral venous sinuses. METHODS: Between September 2012 and June 2014, 57 patients (39 female, 18 male) presenting with iatrogenic tears of the superior sagittal or transverse/sigmoid sinuses were treated with a topical fibrin sealant patch. Intraoperative source of bleeding, time to bleeding control, quantity of sealant sponge used, and postoperative complications were evaluated. Time to hemostasis was used as the primary end point. RESULTS: Effective hemostasis, defined as cessation of bleeding after application of topical hemostatic agent, was achieved no later than 4 minutes in all except 5 patients with persistent bleeding from the sinus. In these 5 cases, bleeding was finally stopped after application of a new larger layer of TachoSil Sponge (2 cases) or gelatin hemostatic matrix (2 cases) or fibrin glue (1 case) over the layer of TachoSil. CONCLUSION: We report our experience with a new hemostasis technique to manage bleeding from iatrogenic lacerations of cerebral venous sinuses.


Assuntos
Cavidades Cranianas/lesões , Fibrinogênio/uso terapêutico , Hemostasia Cirúrgica/métodos , Complicações Intraoperatórias , Lacerações/terapia , Tampões de Gaze Cirúrgicos , Trombina/uso terapêutico , Idoso , Estudos de Coortes , Combinação de Medicamentos , Feminino , Adesivo Tecidual de Fibrina/uso terapêutico , Hemostáticos/uso terapêutico , Humanos , Lacerações/etiologia , Masculino , Neoplasias Meníngeas/cirurgia , Meningioma/cirurgia , Pessoa de Meia-Idade , Resultado do Tratamento
14.
Clin Neurol Neurosurg ; 124: 166-74, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25064150

RESUMO

Interspinous distraction devices provide an effective treatment for patients suffering from lumbar spinal stenosis and/or degenerative disk disease. The aim of this multicenter study was the prospective evaluation of patients treated for symptomatic lumbar spinal stenosis with interspinous process decompression (IPD) implants compared with a population of patients managed with conservative treatment. 542 patients affected by symptomatic lumbar spine degenerative disease were enrolled in a controlled trial. 422 patients underwent surgical treatment consisting of X-STOP device implantation, whereas 120 control cases were managed conservatively. Both patient groups underwent follow-up evaluations at 6, 12, 24, and 36 months using the Zurich Claudication Questionnaire, the Visual Analog Scale score and spinal lumbar X-rays, CT scans and MR imaging. One-year follow-up evaluation revealed positive good results in the 83.5% of patients treated with IPD with respect to 50% of the nonoperative group cases. During the first three years, in 38 out of the 120 control cases, a posterior decompression and/or spinal fixation was performed because of unsatisfactory results of the conservative therapy. In 24 of 422 patients, the IPD device had to be removed, and a decompression and/or pedicle screw fixation was performed because of the worsening of neurological symptoms. Our results support the effectiveness of surgery in patients with stenosis. IPD may offer an effective and less invasive alternative to classical microsurgical posterior decompression in selected patients with spinal stenosis and lumbar degenerative disk diseases.


Assuntos
Descompressão Cirúrgica/métodos , Degeneração do Disco Intervertebral/cirurgia , Vértebras Lombares/cirurgia , Próteses e Implantes , Estenose Espinal/cirurgia , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
15.
J Neurol Surg A Cent Eur Neurosurg ; 75(5): 365-70, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24570305

RESUMO

BACKGROUND: We describe a simple, safe, and inexpensive technique that through the comparison of three-dimensional (3D)-rendered magnetic resonance (MR) images and real anatomy allows us to navigate and remove brain lesions, including those without cortical appearance, by direct recognition of anatomical landmarks. Preoperative planning no longer requires the use of fiducials and can therefore be performed out a stereotactic setting. METHODS: MR Digital Imaging and Communications in Medicine format scans of 93 patients were reconstructed using MRIcro freeware for their three-dimensional rendering (3DR). The main location of the lesions was rolandic or left temporal, and most of them were without cortical appearance (78%). The two-dimensional (2D) sets of images were processed by the software to perform a 3DR, thus obtaining a virtual model of the patient's head. Using the same 2D sets, the edges of the lesion's images were contoured by the region of interest (ROI) tool. In the next step, the ROI was projected onto the surface of the virtual model of the patient's head, thus helping to attain the best identification of the craniotomy area. MRIcro automatic segmentation function, the Brain Extraction Tool (BET), provides a clear 3DR of the cortical surface. We used BET to display gyri, sulci, and perilesional vessels to have further anatomical landmarks to guide the surgical approach. RESULTS: The lesions were accessed through an optimally suited craniotomy. The visual matching of the cortical surface with reconstructed 3D images of the cortex permitted a fast localization of cortical and subcortical lesions. The major limitation is the depth of a lesion deeper than 3 cm. In these cases, the use of frame-based or frameless techniques still seems safer and more advantageous. Conclusions: The shape recognition of the cortical landmarks was not biased by brain distortion because the sulci and cortical vessels almost always had a relationship to each other that was not modified by edema or cerebrospinal fluid leakage. This 3DR allows us to reconstruct a virtual anatomy in an easy, portable, and inexpensive way. In selected cases, this technique represents a valid and safe alternative to the use of costly neuronavigation tools and is potentially helpful in developing countries.


Assuntos
Neoplasias Encefálicas/cirurgia , Craniotomia/métodos , Cirurgia Assistida por Computador/métodos , Feminino , Humanos , Resultado do Tratamento , Adulto Jovem
16.
Neurol Med Chir (Tokyo) ; 54(5): 349-56, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24305027

RESUMO

The aim of the study is to evaluate the efficacy of craniotomy and membranectomy as initial treatment of organized chronic subdural hematoma (OCSH). We retrospectively reviewed a series of 34 consecutive patients suffering from OCSH, diagnosed by magnetic resonance imaging (MRI) or contrast computer tomography (CCT) in order to establish the degree of organization and determine the intrahematomal architecture. The indication to perform a primary enlarged craniotomy as initial treatment for non-liquefied chronic subdural hematoma (CSDH) with multilayer loculations was based on the hematoma MRI appearance--mostly hyperintense in both T1- and T2-weighted images with a hypointense web- or net-like structure within the hematoma cavity. The reason why some hematomas evolve towards a complex and organized architecture remains unclear; the most common aspect to come to light was the "long standing" of the CSDHs which, in our series, had an average interval of 10 weeks between head injury and initial scan. Recurrence was found to have occurred in 2 patients (6% of cases) in the form of acute subdural hematoma. One patient died as the result of an intraventricular and subarachnoid haemorrhage, while 2 patients (6%) suffered an haemorrhagic stroke ipsilateral to the OCSH. Eighty-nine percent of cases had a good recovery, while 11% remained unchanged or worsened. In select cases, based on the MRI appearance, primary enlarged craniotomy seems to be the treatment of choice for achieving a complete recovery and a reduced recurrence rate in OCSH.


Assuntos
Craniectomia Descompressiva/métodos , Hematoma Subdural Crônico/cirurgia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Hemorragia Cerebral/etiologia , Traumatismos Craniocerebrais/complicações , Diagnóstico Precoce , Feminino , Hematoma Subdural Crônico/diagnóstico , Humanos , Imageamento por Ressonância Magnética , Masculino , Membranas , Pessoa de Meia-Idade , Recidiva , Estudos Retrospectivos , Índice de Gravidade de Doença , Hemorragia Subaracnóidea/etiologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Trepanação , Adulto Jovem
17.
Surg Technol Int ; 23: 296-306, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24085510

RESUMO

Intraoperative motor evoked potentials (MEP) and electromyography (EMG) monitoring in patients with spinal and cranial lesions is a valuable tool for prevention of postoperative motor deficits. The purpose of this study was to determine whether electrophysiological monitoring during skull base, spinal cord, and spinal surgery might be useful for predicting postoperative motor deterioration. From January 2012 to March 2013, thirty-three consecutive patients were studied using intraoperative monitoring (Nuvasive NV-M5 System) to check the integrity of brainstem, spinal cord, and nerve roots, recording transcranial motor evoked potentials (TcMEPs) and electromyography. Changes in MEPs and EMGs were related to postoperative deficits. Preoperative diagnosis included skull base and brainstem lesions (6 patients), spinal tumors (11 patients), spinal deformity (16 cases). Using TcMEPs and EMG is a practicable and safe method. MEPs are useful in any surgery in which the brainstem and spinal cord are at risk. EMG stimulation helps to identify an optimal trans-psoas entry point for an extreme lateral lumbar interbody fusion (XLIF) approach to protect against potential nerve injury. This neural navigation technique via a surgeon-interpreted interface assists the surgical team in safely removing lesions and accessing the intervertebral disc space for minimally invasive spinal procedures.


Assuntos
Lesões Encefálicas/prevenção & controle , Eletroencefalografia/métodos , Eletromiografia/métodos , Monitorização Neurofisiológica Intraoperatória/métodos , Transtornos dos Movimentos/prevenção & controle , Procedimentos Neurocirúrgicos/efeitos adversos , Traumatismos da Medula Espinal/prevenção & controle , Adulto , Idoso , Lesões Encefálicas/diagnóstico , Lesões Encefálicas/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos dos Movimentos/diagnóstico , Transtornos dos Movimentos/etiologia , Procedimentos Neurocirúrgicos/métodos , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Traumatismos da Medula Espinal/diagnóstico , Traumatismos da Medula Espinal/etiologia
19.
Chir Ital ; 57(1): 115-20, 2005.
Artigo em Italiano | MEDLINE | ID: mdl-15832748

RESUMO

The Authors report a case of a 71-year-old male with synchronous neuroendocrine colon carcinoma and a solitary brain metastasis. The patient was treated surgically with resection of both the cerebral and intestinal lesions followed by cerebral radiotherapy. A pulmonary metastasis was discovered after 3 months and treated with interferon and octreotide. No further cerebral or intestinal relapses were observed. The patient died of cardiac disease 11 months after the first operation. Central nervous system metastases from carcinoid tumours are rare. The reported survival in untreated cases or in cases treated by radiotherapy alone is 4 months. In the case reported, surgical resection of the cerebral and intestinal lesions followed by intracranial radiotherapy yielded complete local control of the disease and a slight improvement in survival.


Assuntos
Neoplasias Encefálicas/secundário , Carcinoma Neuroendócrino/secundário , Neoplasias do Colo/patologia , Idoso , Neoplasias Encefálicas/radioterapia , Neoplasias Encefálicas/cirurgia , Carcinoma Neuroendócrino/radioterapia , Carcinoma Neuroendócrino/cirurgia , Evolução Fatal , Humanos , Masculino
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