Abstract：
BACKGROUND:The flexion of the skull base (basal angle [BA]) is the inclination between the anterior fossae and the basilar ramp of the occipital and sphenoid bones. An increased BA, termed platybasia, is usually associated with basilar invagination. BA reference values in the magnetic resonance imaging (MRI) era and the diagnosis of platybasia are of clinical importance. The transnasal approach has been the surgical technique of choice to remove the odontoid process in cases of ventral brainstem compression in patients with platybasia. The knowledge of normal BA values has been influenced by technological image acquisitions. The aim of this study was to determine the normal BA values in normal subjects in the MRI era. METHODS:For the determination of normal BA values, the literature reporting these values in normal individuals was reviewed and a meta-analysis of pertinent studies was performed. RESULTS:A total of 8 articles were included in this study, evaluating a total of 667 individuals. A summary measure of the results was obtained. The data obtained in this analysis provided a final basal angle value of 116.5 degrees (95% confidence interval, 104.39-128.7). The normal basal angle ranges between 104 and 129 degrees. CONCLUSION:Platybasia can be defined as a value >129 from the basal angle.
journal_name
World Neurosurgjournal_title
World neurosurgeryauthors
Ferreira JA,Botelho RVdoi
10.1016/j.wneu.2019.09.056subject
Has Abstractpub_date
2019-12-01 00:00:00pages
363-367eissn
1878-8750issn
1878-8769pii
S1878-8750(19)32486-6journal_volume
132pub_type
杂志文章,评审abstract：OBJECTIVE:To determine the predictive factors for endocrinological remission of patients with growth hormone (GH)-secreting pituitary adenomas. METHODS:In 47 patients with GH-secreting pituitary adenomas who underwent endoscopic endonasal transsphenoidal surgery with intraoperative GH measurements from 2002 to 2011, t...
journal_title：World neurosurgery
pub_type： 杂志文章
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journal_title：World neurosurgery
pub_type： 杂志文章
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更新日期：2018-03-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
doi：10.1016/j.wneu.2017.08.013
更新日期：2017-12-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
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journal_title：World neurosurgery
pub_type： 杂志文章,多中心研究
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journal_title：World neurosurgery
pub_type： 杂志文章
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abstract：:Hydatid cyst is an infectious disease caused by Echinococcus granulosus, primarily involving the liver and lungs. The orbit is an extremely rare site for involvement with hydatid cyst. We present a 36-year-old man with unilateral visual loss, proptosis, and papilledema caused by an orbital hydatid cyst. ...
journal_title：World neurosurgery
pub_type： 杂志文章,评审
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更新日期：2017-05-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章,评审
doi：10.1016/j.wneu.2018.11.255
更新日期：2019-03-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
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更新日期：2018-02-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
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更新日期：2017-11-01 00:00:00
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journal_title：World neurosurgery
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更新日期：2020-03-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
doi：10.1016/j.wneu.2016.08.095
更新日期：2016-12-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
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更新日期：2019-08-01 00:00:00
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journal_title：World neurosurgery
pub_type：
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更新日期：2020-05-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.wneu.2015.05.058
更新日期：2015-11-01 00:00:00
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pub_type： 杂志文章
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更新日期：2018-12-01 00:00:00
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pub_type： 杂志文章,多中心研究
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更新日期：2019-03-01 00:00:00
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更新日期：2018-08-01 00:00:00
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更新日期：2014-05-01 00:00:00
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journal_title：World neurosurgery
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更新日期：2019-09-01 00:00:00
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journal_title：World neurosurgery
pub_type： 传,历史文章,杂志文章,评审
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更新日期：2018-01-01 00:00:00
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pub_type： 杂志文章
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更新日期：2019-07-01 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2020-11-01 00:00:00
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journal_title：World neurosurgery
pub_type： 杂志文章
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更新日期：2014-12-01 00:00:00
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更新日期：2019-07-01 00:00:00
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更新日期：2020-03-01 00:00:00
