H. Kurita1, I. Suzuki1, M. Shin1, K. Kawai1, M. Tago2, T. Momose2, T. Kirino1
{"title":"Successful Radiosurgical Treatment of Lesional Epilepsy of Mesial Temporal Origin","authors":"H. Kurita1, I. Suzuki1, M. Shin1, K. Kawai1, M. Tago2, T. Momose2, T. Kirino1","doi":"10.1055/s-2001-13586","DOIUrl":"https://doi.org/10.1055/s-2001-13586","url":null,"abstract":"","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"18 1","pages":"43 - 46"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72715931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Kotilainen1, A. Alanen2, M. Erkintalo2, S. Valtonen1, M. Kormano2
{"title":"Association Between Decreased Disc Signal Intensity in Preoperative T2-Weighted MRI and a 5-Year Outcome after Lumbar Minimally Invasive Discectomy","authors":"E. Kotilainen1, A. Alanen2, M. Erkintalo2, S. Valtonen1, M. Kormano2","doi":"10.1055/s-2001-13584","DOIUrl":"https://doi.org/10.1055/s-2001-13584","url":null,"abstract":"","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"231 1","pages":"31 - 36"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75569219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The authors report two cases of large arachnoid cysts of the posterior fossa treated by endoscopic surgery. One patient underwent a successful endoscopic cyst fenestration by burr hole approach after several procedures of shunt revision. In another an endoscope-assisted microsurgical intervention was necessary. Lateral (cerebellar or cerebellopontine angle) cysts, as two reported cases, may be treated through a lateral retromastoid approach by fenestration into the prepontine cistern and eventually into the cisterna magna. We advise to start the operation through a burr hole and to try to realize the fenestration by endoscopy only. If this attempt fails, an endoscope-assisted microsurgical technique may be performed by enlarging the craniectomy. In this last instance the endoscope is useful particularly deeply to fenestrate the anterior cyst wall in the prepontine or ambient cisterns, where it provides more illumination and helps to identify the nervous and vascular structures.
{"title":"Endoscopic Surgery for Large Posterior Fossa Arachnoid Cysts","authors":"M. Gangemi, F. Maiuri, G. Colella, L. Sardo","doi":"10.1055/s-2001-13588","DOIUrl":"https://doi.org/10.1055/s-2001-13588","url":null,"abstract":"The authors report two cases of large arachnoid cysts of the posterior fossa treated by endoscopic surgery. One patient underwent a successful endoscopic cyst fenestration by burr hole approach after several procedures of shunt revision. In another an endoscope-assisted microsurgical intervention was necessary. Lateral (cerebellar or cerebellopontine angle) cysts, as two reported cases, may be treated through a lateral retromastoid approach by fenestration into the prepontine cistern and eventually into the cisterna magna. We advise to start the operation through a burr hole and to try to realize the fenestration by endoscopy only. If this attempt fails, an endoscope-assisted microsurgical technique may be performed by enlarging the craniectomy. In this last instance the endoscope is useful particularly deeply to fenestrate the anterior cyst wall in the prepontine or ambient cisterns, where it provides more illumination and helps to identify the nervous and vascular structures.","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"6 1","pages":"21 - 24"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84964019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A passive infrared armless and frameless neuronavigation system was introduced in routine intracranial and skull base surgery, and its impact on 51 cases in a one year period was assessed. No cases were rejected by the operating surgeon for lack of accuracy (> 3 mm). Operating time was not significantly lengthened, except in transphenoidal cases (255 +/- SD 168 min versus 185 +/- SD 119 min, p = 0.02). Length of stay was shorter in navigation cases in supratentorial glioma (12 +/- SD 7.3 days versus 15 +/- SD 7.9 days) and meningioma (11 +/- SD 5.3 days versus 16 +/- SD 6.7 days, p = 0.01). Outcome at 3 months was comparable in both the supratentorial glioma and meningioma group. Problems such as setup time and brain shift are addressed and discussed.
将被动红外无臂无框架神经导航系统应用于颅底常规手术，对51例患者1年的临床效果进行了评价。没有病例因精确度不足(> 3mm)而被手术医生拒绝。除经蝶窦病例外，手术时间无明显延长(255 +/- SD 168 min vs 185 +/- SD 119 min, p = 0.02)。导航组幕上胶质瘤(12 +/- SD 7.3天，15 +/- SD 7.9天)和脑膜瘤(11 +/- SD 5.3天，16 +/- SD 6.7天，p = 0.01)的住院时间较短。幕上胶质瘤组和脑膜瘤组在3个月时的结果是相似的。讨论了设置时间和大脑转移等问题。
{"title":"The Impact of an Armless Frameless Neuronavigation System on Routine Brain Tumour Surgery: A Prospective Analysis of 51 Cases","authors":"G. Wong, W. Poon, M. Lam","doi":"10.1055/s-2001-15998","DOIUrl":"https://doi.org/10.1055/s-2001-15998","url":null,"abstract":"A passive infrared armless and frameless neuronavigation system was introduced in routine intracranial and skull base surgery, and its impact on 51 cases in a one year period was assessed. No cases were rejected by the operating surgeon for lack of accuracy (> 3 mm). Operating time was not significantly lengthened, except in transphenoidal cases (255 +/- SD 168 min versus 185 +/- SD 119 min, p = 0.02). Length of stay was shorter in navigation cases in supratentorial glioma (12 +/- SD 7.3 days versus 15 +/- SD 7.9 days) and meningioma (11 +/- SD 5.3 days versus 16 +/- SD 6.7 days, p = 0.01). Outcome at 3 months was comparable in both the supratentorial glioma and meningioma group. Problems such as setup time and brain shift are addressed and discussed.","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"600 1","pages":"99 - 103"},"PeriodicalIF":0.0,"publicationDate":"2001-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77242437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Kurita, Ostertag Cb, B. Baumer, K. Kopitzki, P. Warnke
We characterized the interphase cell death of 9L gliosarcoma after high-dose-rate, low-energy photon irradiation using the Photon Radiosurgery System (PRS), a novel device for interstitial radiotherapy. Within 24 hours after irradiation with a dose of 18 Gray, 22.0% of cells underwent metabolic cell death, whereas dead cells in controls stayed less than 5.0% (p<0.005). In the majority of sensitive cells, loss of membrane integrity preceded the lethal morphological changes. The response was dose-dependent over the range of 9-18 Gray, but saturation was obtained over 18 Gray. On the other hand, a significant (p < 0.01) increase in the number of TUNEL-positive cells with apoptotic morphology was detected 6-24 hours after irradiation, but the fraction remained 1.9-2.1% of the population and was independent of the doses between 9 and 25 Gray. Apoptotic cells were rarely observed in the control cells (0.3-0.6%). Our data indicate that single high-dose irradiation induces both necrotic and apoptotic interphase cell death in 9L gliosarcoma, but rapid cell death mostly occurs through the non-apoptotic pathway.
{"title":"Early Effects of PRS-Irradiation for 9L Gliosarcoma: Characterization of Interphase Cell Death","authors":"H. Kurita, Ostertag Cb, B. Baumer, K. Kopitzki, P. Warnke","doi":"10.1055/s-2000-11373","DOIUrl":"https://doi.org/10.1055/s-2000-11373","url":null,"abstract":"We characterized the interphase cell death of 9L gliosarcoma after high-dose-rate, low-energy photon irradiation using the Photon Radiosurgery System (PRS), a novel device for interstitial radiotherapy. Within 24 hours after irradiation with a dose of 18 Gray, 22.0% of cells underwent metabolic cell death, whereas dead cells in controls stayed less than 5.0% (p<0.005). In the majority of sensitive cells, loss of membrane integrity preceded the lethal morphological changes. The response was dose-dependent over the range of 9-18 Gray, but saturation was obtained over 18 Gray. On the other hand, a significant (p < 0.01) increase in the number of TUNEL-positive cells with apoptotic morphology was detected 6-24 hours after irradiation, but the fraction remained 1.9-2.1% of the population and was independent of the doses between 9 and 25 Gray. Apoptotic cells were rarely observed in the control cells (0.3-0.6%). Our data indicate that single high-dose irradiation induces both necrotic and apoptotic interphase cell death in 9L gliosarcoma, but rapid cell death mostly occurs through the non-apoptotic pathway.","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"114 1","pages":"197 - 200"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82920017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Riegel1, O. Alberti1, R. Retsch1, V. Shiratori2, D. Hellwig1, H. Bertalanffy1
{"title":"Relationships of Virtual Reality Neuroendoscopic Simulations to Actual Imaging","authors":"T. Riegel1, O. Alberti1, R. Retsch1, V. Shiratori2, D. Hellwig1, H. Bertalanffy1","doi":"10.1055/s-2000-11375","DOIUrl":"https://doi.org/10.1055/s-2000-11375","url":null,"abstract":"","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"356 1","pages":"176 - 180"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77151510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Liščák, V. Vladyka, G. Simonova, J. Vymazal, J. Novotný
Over 6 years (1992-1998) 26 patients with brain stem cavernomas were treated using the Leksell gamma knife in Prague. 25 patients had a follow up of 6-66, median 24 months. Annual risk of bleeding before radiosurgery was 4%. After gamma knife treatment sudden impairment of neurodeficit reported as rebleeding was observed in 4 patients at 6-51 months, median 16.5 months, after radiosurgery. This represented a 6.8% risk of rebleeding after radiosurgery, which is not significantly different from the risk before radiosurgery. MRI or CT was performed in 24 patients 6-48, median 24, months after radiosurgery. There were no signs of rebleeding in any of the patients, nor any increase of the cavernoma. A decrease of cavernoma size was observed in 8 (33%) of patients. Temporary collateral edema after radiosurgery was detected in 5 (21%) of patients 3-12, median 11, months after radiosurgery. Neurodeficit was observed in 21 of 26 patients before radiosurgery. Improvement of the neurodeficit was detected in 9 (43%) of them 6-36, median 8, months after radiosurgery. Temporary morbidity caused by collateral edema or rebleeding occurred in 7 patients (28%) and permanent morbidity remained in 2 patients (8%). 2 patients died because of rebleeding 6 and 51 months after radiosurgery and the third patient for unrelated reason. Radiosurgery of the brain stem cavernomas was indicated when there was bleeding in the history or progressive neurodeficit and microsurgery was considered too risky. Leksell gamma knife radiosurgery of cavernomas has proved its low morbidity and zero mortality. In case of an insufficient effect of radiosurgery, or if the protective effect from rebleeding comes too late, morbidity and mortality can correspond to the natural course of the disease, as it was left without any treatment.
{"title":"Gamma Knife Radiosurgery of the Brain Stem Cavernomas","authors":"R. Liščák, V. Vladyka, G. Simonova, J. Vymazal, J. Novotný","doi":"10.1055/s-2000-11378","DOIUrl":"https://doi.org/10.1055/s-2000-11378","url":null,"abstract":"Over 6 years (1992-1998) 26 patients with brain stem cavernomas were treated using the Leksell gamma knife in Prague. 25 patients had a follow up of 6-66, median 24 months. Annual risk of bleeding before radiosurgery was 4%. After gamma knife treatment sudden impairment of neurodeficit reported as rebleeding was observed in 4 patients at 6-51 months, median 16.5 months, after radiosurgery. This represented a 6.8% risk of rebleeding after radiosurgery, which is not significantly different from the risk before radiosurgery. MRI or CT was performed in 24 patients 6-48, median 24, months after radiosurgery. There were no signs of rebleeding in any of the patients, nor any increase of the cavernoma. A decrease of cavernoma size was observed in 8 (33%) of patients. Temporary collateral edema after radiosurgery was detected in 5 (21%) of patients 3-12, median 11, months after radiosurgery. Neurodeficit was observed in 21 of 26 patients before radiosurgery. Improvement of the neurodeficit was detected in 9 (43%) of them 6-36, median 8, months after radiosurgery. Temporary morbidity caused by collateral edema or rebleeding occurred in 7 patients (28%) and permanent morbidity remained in 2 patients (8%). 2 patients died because of rebleeding 6 and 51 months after radiosurgery and the third patient for unrelated reason. Radiosurgery of the brain stem cavernomas was indicated when there was bleeding in the history or progressive neurodeficit and microsurgery was considered too risky. Leksell gamma knife radiosurgery of cavernomas has proved its low morbidity and zero mortality. In case of an insufficient effect of radiosurgery, or if the protective effect from rebleeding comes too late, morbidity and mortality can correspond to the natural course of the disease, as it was left without any treatment.","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"21 1","pages":"201 - 207"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74593228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Transient Hyponatriemia Complicated by Seizures after Endoscopic Third Ventriculostomy","authors":"C. Vaicys1, A. Fried2","doi":"10.1055/s-2000-11371","DOIUrl":"https://doi.org/10.1055/s-2000-11371","url":null,"abstract":"","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"99 1","pages":"190 - 191"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80567309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Ebel1, G. Schillinger1, C. Walter2, H. Brockhagen2, N. Klug1
{"title":"Titanium Clamps for Refixation of Bone Fragments in the Repair of Depressed Skull Fractures: Technical Note","authors":"H. Ebel1, G. Schillinger1, C. Walter2, H. Brockhagen2, N. Klug1","doi":"10.1055/s-2000-11380","DOIUrl":"https://doi.org/10.1055/s-2000-11380","url":null,"abstract":"","PeriodicalId":49808,"journal":{"name":"Minimally Invasive Neurosurgery","volume":"93 1","pages":"212 - 214"},"PeriodicalIF":0.0,"publicationDate":"2000-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74915868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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