Abstract:
OBJECT:Knowing the rate of rupture associated with unruptured cerebral aneurysms (UCAs) can help surgeons determine a case management strategy in patients harboring these lesions. According to large-scale cohort studies involving populations in North America and Europe, small unruptured aneurysms carry a very low risk of rupture. In Japan, however, there have been sporadic reports of higher rates of rupture. To identify the rupture risk associated with UCAs in the Japanese population, the authors systematically reviewed retrospective studies of the natural course of these lesions. METHODS:The authors searched Medline and the Japan Medical Abstract Society Index for reports of UCAs in Japan. Two of the authors verified the eligibility of the reports and extracted data independently. Additional information was directly obtained from the authors of the original reports. Thirteen reports covering a total of 3801 patient-years fulfilled the criteria for our study. Subsequent rupture was documented in 104 patients and the annual rupture rate was 2.7% (95% confidence interval 2.2-3.3%). Large, posterior-circulation, and symptomatic aneurysms were associated with significantly higher rates of rupture (relative risks 6.4, 2.3, and 2.1, respectively). The risk of rupture determined by the authors' review was significantly higher than that reported by investigators from international cohort studies. CONCLUSIONS:Although a selection bias of patients may be the cause of the higher rupture risk, untreated UCAs that have been followed in Japanese institutions have a considerably high rate of rupture. The natural course of UCAs should be carefully estimated in countries not included in the international studies.
journal_name
J Neurosurgjournal_title
Journal of neurosurgeryauthors
Morita A,Fujiwara S,Hashi K,Ohtsu H,Kirino Tdoi
10.3171/jns.2005.102.4.0601subject
Has Abstractpub_date
2005-04-01 00:00:00pages
601-6issue
4eissn
0022-3085issn
1933-0693journal_volume
102pub_type
杂志文章,评审abstract::Peroneal neuropathy has been observed in starvation, anorexia, and other situations of extreme weight loss. The authors report a case in which sequential bilateral peroneal neuropathies developed after successful bariatric surgery resulting in a weight loss of 114 lbs over 12 months. The diagnosis was confirmed using ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2006.105.4.631
更新日期:2006-10-01 00:00:00
abstract::Acute studies performed in five patients indicate that electrical stimulation of the brain could be a powerful tool for the reduction or control of intractable pain. While chronic or spontaneous pain could be relieved by stimulation of the periaqueductal gray matter, the accompanying side effects render it impossible ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1977.47.2.0178
更新日期:1977-08-01 00:00:00
abstract::In this study of 110 cranial cavities from adult cadavers, the superior sagittal sinus was found to divide into two channels. In most cases, the division was associated with a dural partition. Essentially, the variations as observed in this study could be grouped into three types: Type 1 includes those specimens in wh...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1985.62.1.0090
更新日期:1985-01-01 00:00:00
abstract:OBJECT:The authors conducted a study to examine the detailed anatomy of the denticulate ligaments and to assess their classic role in spinal cord stability within the spinal canal. METHODS:Detailed observation of the denticulate ligaments in 12 adult cadavers was performed. Stress was applied in all major planes to di...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/spi.2001.94.2.0271
更新日期:2001-04-01 00:00:00
abstract::The authors report a case of pituitary apoplexy resulting in bilateral internal carotid artery occlusion, with marked depression of consciousness and hemiplegia. After transsphenoidal tumor decompression, restoration of flow in both carotid arteries was documented angiographically and the patient made an excellent cli...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1984.61.3.0586
更新日期:1984-09-01 00:00:00
abstract::The effect of subarachnoid hemorrhage (SAH) on endothelium-dependent vasodilation of the isolated rabbit basilar artery was examined using an isometric tension recording method. The SAH was induced by injecting 5 ml of fresh arterial blood into the cisterna magna. Sixty-two rabbits were separated into four groups acco...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1987.66.6.0915
更新日期:1987-06-01 00:00:00
abstract::The direct cortical response (DCR), an electrical potential recorded in the immediate vicinity of a surface cortical stimulus, shows a configuration in the primary sensory areas of animals that is different from the one observed in association cortex. This suggested the possibility that systematic study of the DCR in ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1994.80.4.0701
更新日期:1994-04-01 00:00:00
abstract:OBJECT:Shock waves have been experimentally applied to various neurosurgical treatments including fragmentation of cerebral emboli, perforation of cyst walls or tissue, and delivery of drugs into cells. Nevertheless, the application of shock waves to clinical neurosurgery remains challenging because the threshold for s...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2007.106.4.667
更新日期:2007-04-01 00:00:00
abstract::The second lumbar vertebra was surgically removed from 10 dogs, and the shortened vertebral column was stabilized by internal fixation with two types of plastic plates. Shortening of the spinal column was usually not associated with detectable loss of function or neurological deficit. Histological lesions, however, in...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1975.42.1.0047
更新日期:1975-01-01 00:00:00
abstract::The authors describe two patients in whom tumor swelling and brain swelling (and possible tumor swelling), respectively, developed after undergoing gamma knife surgery. One had a skull defect with a palpable parasagittal tumor. One had neurofibromatosis Type 2 with multiple tumors, one of which was parasagittal. ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2005.102.s_supplement.0001
更新日期:2005-01-01 00:00:00
abstract::A number of operative techniques have been described for the treatment of herniated thoracic discs. The transfacet pedicle-sparing approach allows for complete disc removal with limited spinal column disruption and soft-tissue dissection. Fifteen cadaveric spinal columns were used for evaluation of exposure, developme...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1995.83.6.0971
更新日期:1995-12-01 00:00:00
abstract:OBJECTIVE:The use of Gamma Knife stereotactic radiosurgery (GKSRS) for the treatment of extensive intracranial metastases has been expanding due to its superior dosimetry and efficacy. However, there remains a dearth of data regarding the dose parameters in actual clinical scenarios. The authors endeavored to calculate...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2020.3.JNS193369
更新日期:2020-05-08 00:00:00
abstract:OBJECT:Aneurysm recurrence after coil therapy remains a major shortcoming in the endovascular management of cerebral aneurysms. The need for long-term imaging follow-up was recently investigated. This study assessed the diagnostic yield of long-term digital subtraction angiography (DSA) follow-up and determined predict...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2014.7.JNS132433
更新日期:2014-11-01 00:00:00
abstract::A case of cerebral metastasis of chorioepithelioma with an occlusion of the angular artery is presented. The occlusion was verified angiographically, surgically, and microscopically. ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1979.51.2.0247
更新日期:1979-08-01 00:00:00
abstract::A spinal cord injury was produced in Wistar rats by extradural compression of the cord with a Sugita aneurysm clip for 5 seconds. During a 2-week observation period following the injury, the tissue norepinephrine (NE), dopamine (DA), and serotonin (5-HT) concentrations decreased uniformly at and below the injured site...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1985.62.5.0743
更新日期:1985-05-01 00:00:00
abstract::The authors report four cases of traumatic neuroma in the cervical nerve root in patients with no history of trauma. In one case the patient presented with intractable pain in the left upper extremity and motor paresis of the left shoulder, and in another case the patient suffered neuropathic pain in the left forearm....
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/spi.2002.97.3.0393
更新日期:2002-10-01 00:00:00
abstract::Pineal region tumors pose certain challenges in regard to their resection: a deep surgical field, associated critical surrounding neurovascular structures, and narrow operative working corridor due to obstruction by the apex of the culmen. The authors describe a lateral supracerebellar infratentorial approach that was...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2015.2.JNS142088
更新日期:2016-01-01 00:00:00
abstract::A patient with a giant traumatic aneurysm of the right internal carotid artery presented with recurrent massive epistaxis 30 years after a head injury. During an episode of acute hemorrhage, this patient was effectively treated with occlusion of the internal carotid artery circulation by a detachable inflatable balloo...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1988.68.1.0142
更新日期:1988-01-01 00:00:00
abstract:OBJECT:Prognostic factors for outcome after aneurysmal subarachnoid hemorrhage (SAH) include the clinical and pathological characteristics of the patient and hemorrhage as well as some aspects of treatment. Because treatment can vary between countries and continents, the authors used a large database of patients with S...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2008.10.JNS08184
更新日期:2009-07-01 00:00:00
abstract::Needle biopsy of the brain utilizing computerized tomography (CT) scan data is an accepted diagnostic technique that has been performed both with and without the aid of stereotaxic frames. Experience with both techniques has resulted in a specific procedure for CT-guided free-hand biopsy which is performed in the CT s...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1987.67.3.0341
更新日期:1987-09-01 00:00:00
abstract::A patient is reported with an anomalous rib that caused compression of the cervical spinal cord and presented with cervical myelopathy. This appears to be the first reported instance of this particular anomaly. The clinicoanatomical aspects of this case are discussed. ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1991.75.3.0465
更新日期:1991-09-01 00:00:00
abstract:OBJECT:The authors studied the effect of Gamma Knife irradiation on angiogenesis induced by cerebral arteriovenous malformation (AVM) tissues implanted in the corneas of rats. METHODS:Ten AVM specimens obtained from tissue resections performed at Marmara University between 1998 and 2004 were used. A uniform amount of ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2007.106.3.463
更新日期:2007-03-01 00:00:00
abstract:OBJECT:The goal of this study was to find which central nervous system (CNS) pathways are involved in volitional control over reinnervated biceps or pectoral muscles. METHODS:Intercostal nerves (ICNs) were coapted to the musculocutaneous nerve (MCN) or the medial pectoral nerve (MPN) in 23 patients with root avulsions...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1998.89.4.0568
更新日期:1998-10-01 00:00:00
abstract::A patient is reported in whom a meningioma of the lateral one-third of the sphenoid ridge was completely removed and long-term prophylaxis for seizures with diphenylhydantoin was prescribed. One and a half years later, a powerful inhibitor developed that specifically neutralized Factor VIII, the antihemophilic factor,...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.1980.53.5.0600
更新日期:1980-11-01 00:00:00
abstract:OBJECT:A relationship has been found between peripheral thermal injury and cerebral complications leading to injury and death. In the present study, the authors examined whether tumor necrosis factor-alpha (TNF-alpha) and matrix metalloproteinase-9 (MMP-9) play a causative role in blood-brain barrier (BBB) disruption a...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/2008.8.JNS08382
更新日期:2009-06-01 00:00:00
abstract::The authors present a rare case of pituicytoma. A dynamic magnetic resonance study performed after Gd injection revealed a markedly, homogeneously enhanced, early-phase pituitary lesion in a 32-year-old woman with a 1-year history of amenorrhea. The tumor bled easily during transsphenoidal resection. The lesion consis...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2003.98.2.0404
更新日期:2003-02-01 00:00:00
abstract:OBJECT:The objective of the present study was to perform a prospective evaluation of the potential efficacy and safety of intraoperative photodynamic therapy (PDT) using talaporfin sodium and irradiation using a 664-nm semiconductor laser in patients with primary malignant parenchymal brain tumors. METHODS:In 27 patie...
journal_title:Journal of neurosurgery
pub_type: 杂志文章,多中心研究
doi:10.3171/2013.7.JNS13415
更新日期:2013-10-01 00:00:00
abstract::Three patients aged 5 1/2 to 9 years old with mutism after posterior fossa surgery are presented. The entity is discussed with a review of 15 additional previously reported cases in children aged 2 to 11 years. In all 18 patients, a large midline tumor of the posterior fossa (medulloblastoma in nine cases, astrocytoma...
journal_title:Journal of neurosurgery
pub_type: 杂志文章,评审
doi:10.3171/jns.1990.72.6.0959
更新日期:1990-06-01 00:00:00
abstract:OBJECT:The aim of this study was to assess the diagnostic yield of imaging tests performed in patients in whom the cause of subarachnoid hemorrhage (SAH) had not been demonstrated on initial angiography. METHODS:By reviewing medical records of 806 patients with SAH who had been admitted during a 6.5-year period, the a...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2003.98.6.1235
更新日期:2003-06-01 00:00:00
abstract:OBJECT:Activation of signaling by the epidermal growth factor receptor (EGFR) through gene amplification or rearrangement is common in human malignancy, especially in a large fraction of de novo glioblastomas multiforme (GBMs). The most common mutant EGFR, (AEGFR, also known as de2-7 EGFR and EGFRvIII) lacks a portion ...
journal_title:Journal of neurosurgery
pub_type: 杂志文章
doi:10.3171/jns.2001.95.3.0472
更新日期:2001-09-01 00:00:00