Abstract:
:In a proportion of small acoustic neuroma patients, monitoring with magnetic resonance imaging shows no volumetric increase of tumour size over the years. The object of the study was to identify some indications for the clinical choice between immediate surgery (with the related risks) and watchful waiting. We performed a retrospective study of 47 non-surgically-treated patients affected by acoustic neuroma and monitored by gadolinium-enhanced MRI between January 1990 and February 1999. Six clinical variables (tumour size, sex, age, initial symptoms, ABR pattern and duration of the symptoms) were examined by univariate analysis. Chi-square test and variance analysis were performed to evaluate the statistical significance. In 30/47 (63.8%) cases, no growth was observed during the entire period of follow-up. In the remaining 17/47 (36.2%) patients, a volumetric increase was detected, most often within the first year of observation. The clinical factors examined did not significantly correlate with growth. Despite the relatively short period of observation, we believe that immediate surgery does not need to be considered mandatory for small acoustic neuromas, even in young patients. However the irregular behaviour of the tumour underlines the importance of monitoring with MRI at least once a year.
journal_name
Acta Neurochir (Wien)journal_title
Acta neurochirurgicaauthors
Modugno GC,Pirodda A,Ferri GG,Fioravanti A,Calbucci F,Pezzi A,Ceroni AR,Pirodda Edoi
10.1007/s007010050483subject
Has Abstractpub_date
1999-01-01 00:00:00pages
1063-7issue
10eissn
0001-6268issn
0942-0940pii
91411063.701journal_volume
141pub_type
杂志文章abstract::Cerebral primitive neuro-ectodermal tumour (PNET) occurring as a second primary malignancy in childhood is exceedingly rare. We present a 7-year-old boy who developed a proven supratentorial PNET five years after enucleation and radio-/chemotherapy for a sporadic, unilateral retinoblastoma with optic nerve invasion. T...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01420048
更新日期:1997-01-01 00:00:00
abstract::Cavernous malformations (CMs) of the midbrain and thalamus are relatively rare and particularly difficult to be resected given their location in eloquent tissues. Here, we report a case of a 14-year-old boy who experienced repeated and progressive right hemiparesis. Image examinations showed a gradually enlarged CM or...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-016-2870-9
更新日期:2016-08-01 00:00:00
abstract:BACKGROUND:We used [F-18] FDG microPET imaging as part of a longitudinal study to investigate changes in the brain. METHODS:Glucose metabolism during the development of neuropathic pain after tibial and sural nerve transection (TST) model rats. MicroPET images were obtained 1 week before operation and then weekly for ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-015-2415-7
更新日期:2015-06-01 00:00:00
abstract::In fifteen cases of brain stem lesions caused by basal tumours, operations, injuries, arteriosclerosis or multiple sclerosis, a paradoxical activity of jaw closing muscles during jaw opening was observed. This inverse activity was the cause of severe trismus in 8 cases. It is the manifestation of a faulty programming ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01403831
更新日期:1985-01-01 00:00:00
abstract::The authors describe a case of a post-traumatic subdural haematoma with an unusual evolution in two phases, one slow, the other very rapid. The rapidity of the evolution was caused by the rupture of a cortical dural artery, shown angiographically. ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01401797
更新日期:1979-01-01 00:00:00
abstract::An extensive and segmental spasm of the ophthalmic artery has been demonstrated angiographically a few hours after a car accident in a case with posttraumatic amaurosis. The possibility of a correlation between ophthalmic artery spasm and posttraumatic amaurosis has been discussed. ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01886679
更新日期:1976-01-01 00:00:00
abstract::In anaesthetized artificially ventilated dogs, the effect of graded arterial hypoxaemia on cerebral blood flow (CBF) and on the oxidative carbohydrate metabolism of the brain was tested. It is shown that the hypoxic vasodilatory influence on cerebral vessels is present even at moderate systemic hypoxaemia, provide tha...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01886665
更新日期:1976-01-01 00:00:00
abstract:BACKGROUND:The microsurgical unilateral laminotomy (MUL) technique for bilateral decompression of lumbar spinal stenosis (LSS) is a less destabilizing alternative to laminectomy and leads to good short-term outcomes. However, little is known about the long-term results including predictive factors. METHODS:Medical rec...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-016-2804-6
更新日期:2016-06-01 00:00:00
abstract:PURPOSE:Patients with oligodendrogliomas with allelic loss of chromosomal arm 1p and 19q have been shown, especially with anaplastic oligodendrogliomas, to have both a better initial and long-term response to chemotherapy as well as an improved overall survival. Effective treatment of patients with brain tumors require...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-010-0743-1
更新日期:2010-11-01 00:00:00
abstract::A saccular cerebral aneurysm was incidentally found at the bifurcation of a fenestrated anterior cerebral artery of 35-week-old Sprague-Dawley rat. The animal had been fed a normal laboratory diet. The internal lamina extended for a short distance into the neck of the aneurysm and then suddenly disappeared. The medial...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01405700
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:The diagnosis of Chiari 1 malformation is based on the extent of tonsillar ectopia. OBJECTIVE:To examine the relationship between the extent of tonsillar ectopia and the intra-operative findings and clinical outcome following Chiari decompression surgery. METHODS:Patients were divided into four groups depe...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-019-04172-0
更新日期:2020-07-01 00:00:00
abstract::We report three cases of ischaemic complications following direct surgery of unruptured cerebral aneurysms having necks with atherosclerotic or calcified walls. Among 30 patients we treated directly for unruptured aneurysm over the last 4 years, 6 had 8 such aneurysms. Atherosclerotic or calcified neck was a major con...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s007010050364
更新日期:1999-01-01 00:00:00
abstract::A surgical carbon dioxide laser unit (laser) has been used since 1977 in twenty-five cases of various brain tumours, including ten meningiomas (four sphenoid ridge, two parasagittal, two falx, one olfactory, one posterior fossa), eleven gliomas (seven glioblastoma, four astrocytoma), two metastatic brain tumours, one ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF02074786
更新日期:1980-01-01 00:00:00
abstract:BACKGROUND:Cerebral cavernous malformations (CCM) are known to be highly epileptogenic lesions. A number of studies on CCM surgery deal with CCM-associated seizures and/or epilepsy. In order to counsel patients with CCM-associated epilepsy, clear results from such studies would be highly useful. This study reviews the ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章,评审
doi:10.1007/s00701-010-0915-z
更新日期:2011-02-01 00:00:00
abstract::A medullary cone metastasis from an adenocarcinoma of esophagus, and a solitary lumbar spinal nerve root metastasis from a breast carcinoma, gave rise to two cases of cauda equina syndrome. Muscle strength in the lower limbs improved postoperatively, while the disturbances of bladder, bowel, and pelvic floor function ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01400978
更新日期:1981-01-01 00:00:00
abstract::Between 1979 and 1989, 7 patients were admitted, with cerebral arteriovenous malformations (AVM) and associated aneurysms (7% of the AVM patients and 2% of the aneurysm patients admitted during the same period). 6 of these patients were admitted because of an intracranial haemorrhage (in 3 of them the AVM, angiographi...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01405792
更新日期:1990-01-01 00:00:00
abstract::We investigated the characteristic features of intramedullary spinal cord tumour associated with neurofibromatosis type 1 (NF-1). We have experienced 44 cases of pathologically confirmed intramedullary spinal cord tumour. Diagnosis of NF-1 was done according to the criteria set by the National Institute of Health Cons...
journal_title:Acta neurochirurgica
pub_type: 杂志文章,评审
doi:10.1007/BF01411560
更新日期:1997-01-01 00:00:00
abstract:BACKGROUND:The optimal management of Chiari I malformation during pregnancy remains uncertain. Labor contractions, which increase intracranial pressure, and neuraxial anesthesia both carry the theoretical risk of brainstem herniation given the altered CSF dynamics inherent to the condition. Mode of delivery and planned...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-020-04308-7
更新日期:2020-07-01 00:00:00
abstract::Ependymomas and tuberculomas are common paediatric posterior fossa lesions in developing countries and may be confused with each other due to some overlapping features. The distinction is important as the treatment for each is entirely different. We have described three young children in whom clinical-radiological fea...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-013-1811-0
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND:The purpose was to review our experience with the surgical management of brainstem cavernomas (BSCs) and especially the impact of the surgical timing on the clinical outcome. METHOD:We retrospectively reviewed 22 patients harboring a BSC, who underwent 23 procedures. FINDINGS:Surgery was carried out during...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-005-0671-7
更新日期:2006-04-01 00:00:00
abstract::In 15 patients without acute brain injury the concentrations of Neuron-specific Enolase (NSE), S-100 Protein (S-100), Creatine Kinase (CK), and Creatine Kinase BB isoenzyme (CK-BB) in ventricular cerebrospinal fluid (CSF) were measured immediately after lateral ventricle cannulation for diagnostic or treatment purpose...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01400675
更新日期:1991-01-01 00:00:00
abstract::We performed cordectomy, a surgical technique that is infrequently used at present, for a patient with post-traumatic syringomyelia (following complete paraplegia of both lower limbs due to dislocation fracture of the 9th thoracic vertebra), yielding a favourable result. We recommend cordectomy as a surgical technique...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-007-1421-9
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Intraventricular chemotherapy via Ommaya reservoir is an important part of the treatment in patients with malignant central nervous system tumors. In these patients, catheter placement can be challenging due to the normal-sized ventricles. METHOD:Intraoperative ultrasound guidance was used for Ommaya reserv...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-021-04719-0
更新日期:2021-01-20 00:00:00
abstract::A method based on growth of cells from glioma biopsies in a triple layer agarose system has been used to test the sensitivity of the tumour cells to different chemotherapeutic and immunotherapeutic agents. A special agarose that could be melted at 65 degrees C, enabled registration of proliferation by an easy and prec...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01400530
更新日期:1988-01-01 00:00:00
abstract::We present a case of dissection of the extracranial vertebral artery with prominent occipital pain and elements of the lateral medullary syndrome. Arteriography showed a string and pearl sign. Magnetic resonance imaging allowed visualization of an intramural thrombus associated with a narrow vascular lumen. The distal...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01401852
更新日期:1993-01-01 00:00:00
abstract:BACKGROUND:In an increasingly complex and competitive professional environment, improving methods to educate neurosurgical residents is key to ensure high-quality patient care. Electronic (e)Learning resources promise interactive knowledge acquisition. We set out to give a comprehensive overview on available eLearning ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章,meta分析
doi:10.1007/s00701-016-3042-7
更新日期:2017-02-01 00:00:00
abstract::We studied the influence of the type of surgery (microsurgery or macrosurgery) and extent (complete resection with lobectomy, complete resection alone, partial resection with lobectomy or partial resection alone) on early postoperative results and survival time in 118 consecutive patients who underwent surgery for gli...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF01402111
更新日期:1991-01-01 00:00:00
abstract::Congenital craniovertebral junction deformities can be associated with an anomalous vertebral artery (VA). At times, the artery crosses the joint posteriorly (i.e., persistent first intersegmental artery) and is at risk during posterior approach. We report a new variant, wherein the bilateral VA coursed medially after...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s00701-018-3601-1
更新日期:2018-08-01 00:00:00
abstract::In this paper, a brief information on factors taking role in intracranial air formation and tension pneumocephalus because of two cases epidural air formation and tension pneumocephalus following transsphenoidal operation is presented. Two cases were treated conservatively. ...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/BF02188782
更新日期:1995-01-01 00:00:00
abstract::Large multicenter studies have recently provided long-term results substantiating the superiority of surgical as compared to conservative treatment for symptomatic and asymptomatic extracranial internal carotid stenoses of more than 70%. These results led to an increase in the frequency of thrombo-endarteriectomies. H...
journal_title:Acta neurochirurgica
pub_type: 杂志文章
doi:10.1007/s007010050195
更新日期:1998-01-01 00:00:00