ln√1-x²的二阶导数

来源：蜘蛛抓取(WebSpider) 时间：2016-10-29 23:51 标签： ln3的导数
Spontaneous resolution of a Chiari malformation Type I and syrinx after supratentorial... - Abstract - Europe PMC
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William R Miele
Clemens M Schirmer
Kevin C Yao
Carl B Heilman
Department of Neurosurgery, Tufts Medical Center, Boston, Massachusetts 20111, USA.
Journal Article, Case Reports
10..JNS11580
The pathogenesis of Chiari malformation Type I (CM-I) and associated syringomyelia is incompletely understood. Patients often present in middle age with incidental or minimally symptomatic CM-I, whose management is controversial. One option is clinical and radiographic observation of asymptomatic and minimally symptomatic patients. The authors here present the case of a 36-year-old woman who had been monitored for 6 years for a minimally symptomatic CM-I and cervicothoracic syrinx. After 5 years of follow-up, she suffered spontaneous rupture of a cerebral cavernous malformation when she was 27 weeks pregnant. The ruptured cavernous malformation and hematoma were operatively managed via a right frontal craniotomy. Ten months after the craniotomy for resection of the ruptured cavernous malformation, follow-up MRI demonstrated resolution of the CM-I and syrinx. Few similar cases have been reported in adults. This case argues for the presence of dynamic factors in the development and maintenance of CM-I and supports the nonoperative treatment of asymptomatic and minimally symptomatic patients.
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