The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Minoru Fujiki - One of the best experts on this subject based on the ideXlab platform.
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Stereotactic Biopsy with electrical monitoring for deep-seated brain tumors.
World Neurosurgery, 2011Co-Authors: Hiroshi Ooba, Tatsuya Abe, Yasutomo Momii, Minoru FujikiAbstract:Objective The Stereotactic Biopsy is widely integrated into clinical practice as an efficient and safe procedure for histologic diagnoses. However, the surgical risk increases when the lesions are close to the eloquence of the adjacent brain. The present report describes two patients with deep-seated brain tumors who underwent a Stereotactic Biopsy with electrical monitoring and demonstrates the importance of this technique. Methods The tentative target and trajectory were determined on a Stereotactic map from the Schaltenbrand and Wahren atlas. A Cosman–Roberts–Wells Stereotactic frame was applied to the patient. Electrical recording along a single trajectory was used to identify the circumscribed neuronal structures, and electrical simulation was administered to the target. The Biopsy point was decided when no adverse events were observed with a low electric current level. Results A 34-year-old male patient with anaplastic astrocytoma in the putamen and thalamus and an 81-year-old female patient with malignant lymphoma in the midbrain underwent Stereotactic biopsies with electrical monitoring. The biopsies were successfully performed without any resulting neurologic deficits. Conclusions This report describes two patients with deep-seated brain tumors who underwent Stereotactic biopsies with electrical recording and stimulation. The electrical monitoring appears to be a useful technique to complement the ordinary image-guided Biopsy.
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Stereotactic Biopsy with electrical monitoring for deep-seated brain tumors.
World neurosurgery, 2011Co-Authors: Hiroshi Ooba, Tatsuya Abe, Yasutomo Momii, Minoru FujikiAbstract:The Stereotactic Biopsy is widely integrated into clinical practice as an efficient and safe procedure for histologic diagnoses. However, the surgical risk increases when the lesions are close to the eloquence of the adjacent brain. The present report describes two patients with deep-seated brain tumors who underwent a Stereotactic Biopsy with electrical monitoring and demonstrates the importance of this technique. The tentative target and trajectory were determined on a Stereotactic map from the Schaltenbrand and Wahren atlas. A Cosman-Roberts-Wells Stereotactic frame was applied to the patient. Electrical recording along a single trajectory was used to identify the circumscribed neuronal structures, and electrical simulation was administered to the target. The Biopsy point was decided when no adverse events were observed with a low electric current level. A 34-year-old male patient with anaplastic astrocytoma in the putamen and thalamus and an 81-year-old female patient with malignant lymphoma in the midbrain underwent Stereotactic biopsies with electrical monitoring. The biopsies were successfully performed without any resulting neurologic deficits. This report describes two patients with deep-seated brain tumors who underwent Stereotactic biopsies with electrical recording and stimulation. The electrical monitoring appears to be a useful technique to complement the ordinary image-guided Biopsy. Copyright © 2013 Elsevier Inc. All rights reserved.
Jean Claude Peragut - One of the best experts on this subject based on the ideXlab platform.
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Pineal Region Tumors and the Role of Stereotactic Biopsy: Review of the Mortality, Morbidity, and Diagnostic Rates in 370 Cases
Neurosurgery, 1996Co-Authors: Jean Régis, Pablo Bouillot, Françoise Rouby-volot, Dominique Figarella-branger, Henry Dufour, Jean Claude PeragutAbstract:OBJECTIVE : It is classically considered that the morbidity and mortality rates are greater for Stereotactic biopsies of pineal region tumors, compared with tumors in other regions. However, to date, the number of cases studied in the literature has been insufficient to evaluate these parameters and compare them with the morbidity and mortality rates for Stereotactic biopsies of tumors located elsewhere. METHODS : With the aim of evaluating these parameters, we reviewed 370 Stereotactic biopsies of pineal region tumors, from 15 French neurosurgical centers. We statistically verified the absence of heterogeneity of the different French centers with regard to diagnostic, mortality, and morbidity rates. In contrast, statistical heterogeneity was clearly seen for the large Stereotactic Biopsy series (for all tumor locations) in the literature. RESULTS : The mortality rate was 1.3% (5 patients of 370), and 3 patients suffered severe neurological complications. This study is the first to clearly demonstrate that the mortality, morbidity, and diagnostic rates for Stereotactic biopsies are not different in the pineal region. CONCLUSION : Our conclusion is that Stereotactic Biopsy must remain a main diagnostic modality for tumors of the pineal region.
Marc Levivier - One of the best experts on this subject based on the ideXlab platform.
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results of positron emission tomography guidance and reassessment of the utility of and indications for Stereotactic Biopsy in children with infiltrative brainstem tumors
Journal of Neurosurgery, 2007Co-Authors: Benoit Pirotte, Alphonse Lubansu, Nicolas Massager, David Wikler, Serge Goldman, Marc LevivierAbstract:Object Most intrinsic infiltrative brainstem lesions diagnosed in children are gliomas, and these carry a very bad prognosis. Although the utility and risk of Stereotactically guided Biopsy procedures in intrinsic infiltrative brainstem lesions have been widely questioned, the neuroimaging diagnosis may be inaccurate in approximately 25% of cases, and the consequences of empirical therapy should not be underestimated. Stereotactic Biopsy sampling is still performed in many centers, but the reported diagnostic yield ranges from 83 to 96%. The authors integrated positron emission tomography (PET) images into the planning for Stereotactic Biopsy procedures to direct the Biopsy needle's trajectory to hypermetabolic foci of intrinsic infiltrative brainstem lesions. Their aim was to assess the benefit of the technique in terms of target selection and diagnostic yield. Methods Twenty children with newly diagnosed intrinsic infiltrative brainstem lesions underwent a PET-guided Stereotactic Biopsy procedure. The P...
Hiroshi Ooba - One of the best experts on this subject based on the ideXlab platform.
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Stereotactic Biopsy with electrical monitoring for deep-seated brain tumors.
World Neurosurgery, 2011Co-Authors: Hiroshi Ooba, Tatsuya Abe, Yasutomo Momii, Minoru FujikiAbstract:Objective The Stereotactic Biopsy is widely integrated into clinical practice as an efficient and safe procedure for histologic diagnoses. However, the surgical risk increases when the lesions are close to the eloquence of the adjacent brain. The present report describes two patients with deep-seated brain tumors who underwent a Stereotactic Biopsy with electrical monitoring and demonstrates the importance of this technique. Methods The tentative target and trajectory were determined on a Stereotactic map from the Schaltenbrand and Wahren atlas. A Cosman–Roberts–Wells Stereotactic frame was applied to the patient. Electrical recording along a single trajectory was used to identify the circumscribed neuronal structures, and electrical simulation was administered to the target. The Biopsy point was decided when no adverse events were observed with a low electric current level. Results A 34-year-old male patient with anaplastic astrocytoma in the putamen and thalamus and an 81-year-old female patient with malignant lymphoma in the midbrain underwent Stereotactic biopsies with electrical monitoring. The biopsies were successfully performed without any resulting neurologic deficits. Conclusions This report describes two patients with deep-seated brain tumors who underwent Stereotactic biopsies with electrical recording and stimulation. The electrical monitoring appears to be a useful technique to complement the ordinary image-guided Biopsy.
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Stereotactic Biopsy with electrical monitoring for deep-seated brain tumors.
World neurosurgery, 2011Co-Authors: Hiroshi Ooba, Tatsuya Abe, Yasutomo Momii, Minoru FujikiAbstract:The Stereotactic Biopsy is widely integrated into clinical practice as an efficient and safe procedure for histologic diagnoses. However, the surgical risk increases when the lesions are close to the eloquence of the adjacent brain. The present report describes two patients with deep-seated brain tumors who underwent a Stereotactic Biopsy with electrical monitoring and demonstrates the importance of this technique. The tentative target and trajectory were determined on a Stereotactic map from the Schaltenbrand and Wahren atlas. A Cosman-Roberts-Wells Stereotactic frame was applied to the patient. Electrical recording along a single trajectory was used to identify the circumscribed neuronal structures, and electrical simulation was administered to the target. The Biopsy point was decided when no adverse events were observed with a low electric current level. A 34-year-old male patient with anaplastic astrocytoma in the putamen and thalamus and an 81-year-old female patient with malignant lymphoma in the midbrain underwent Stereotactic biopsies with electrical monitoring. The biopsies were successfully performed without any resulting neurologic deficits. This report describes two patients with deep-seated brain tumors who underwent Stereotactic biopsies with electrical recording and stimulation. The electrical monitoring appears to be a useful technique to complement the ordinary image-guided Biopsy. Copyright © 2013 Elsevier Inc. All rights reserved.
Jean Régis - One of the best experts on this subject based on the ideXlab platform.
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Pineal Region Tumors and the Role of Stereotactic Biopsy: Review of the Mortality, Morbidity, and Diagnostic Rates in 370 Cases
Neurosurgery, 1996Co-Authors: Jean Régis, Pablo Bouillot, Françoise Rouby-volot, Dominique Figarella-branger, Henry Dufour, Jean Claude PeragutAbstract:OBJECTIVE : It is classically considered that the morbidity and mortality rates are greater for Stereotactic biopsies of pineal region tumors, compared with tumors in other regions. However, to date, the number of cases studied in the literature has been insufficient to evaluate these parameters and compare them with the morbidity and mortality rates for Stereotactic biopsies of tumors located elsewhere. METHODS : With the aim of evaluating these parameters, we reviewed 370 Stereotactic biopsies of pineal region tumors, from 15 French neurosurgical centers. We statistically verified the absence of heterogeneity of the different French centers with regard to diagnostic, mortality, and morbidity rates. In contrast, statistical heterogeneity was clearly seen for the large Stereotactic Biopsy series (for all tumor locations) in the literature. RESULTS : The mortality rate was 1.3% (5 patients of 370), and 3 patients suffered severe neurological complications. This study is the first to clearly demonstrate that the mortality, morbidity, and diagnostic rates for Stereotactic biopsies are not different in the pineal region. CONCLUSION : Our conclusion is that Stereotactic Biopsy must remain a main diagnostic modality for tumors of the pineal region.