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Erschienen in: Child's Nervous System 4/2009

01.04.2009 | Original Paper

Factors contributing improvement of syringomyelia and surgical outcome in type І Chiari malformation

verfasst von: Young Seok Park, Dong-Seok Kim, Kyu-Won Shim, Jung-Hee Kim, Joong-Uhn Choi

Erschienen in: Child's Nervous System | Ausgabe 4/2009

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Abstract

Objective

The aim of our study was to compare pre- and postoperative radiologic data of posterior fossa and the improvement of syringomyelia after posterior fossa decompression (PFD) with and without tonsillar management in Chiari type І malformation (CM-I).

Material and methods

A retrospective analysis was made of all patients who underwent PFD between Oct 1991 and March 2007 for CM-I. Fifty-seven patients treated for CM-I at a single institution were included in the study. Patients were divided into two groups according to the procedures used during their PFD: PFD vs. PFD with tonsillar management. To determine whether the tonsillar management or changes of posterior fossa volume relate with surgical outcome, we measure posterior fossa size and syringomyelia pre- and postoperatively using magnetic resonance imaging.

Results

Forty patients (70.2%) received PFD and 17 patients (29.8%) received PFD with tonsillar management. The length of syringomyelia affected improvement of syringomyelia (alteration rate, A-rate). Clinical symptoms, craniectomy size, syringomyelia type, and the surgeon’s specialty did not affect A-rate. Tonsillar management has no significant effect on improvement of syringomyelia. Four patients need repeated surgery due to recurrence.

Conclusion

We have shown that tonsillar management do not lead to improve A-rate, and the radiologic changes of posterior fossa volume do not relate with radiologic improvement of syringomyelia. PFD without tonsillar management is sufficient to improve syringomyelia. The longer syrinx, the more A-rate improve in our study. However, a wider craniectomy is unrelated to A-rate. In cases of recurrent patients, we obtained good results with tonsillar management or syringosubarachnoid shunt.
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Metadaten
Titel
Factors contributing improvement of syringomyelia and surgical outcome in type І Chiari malformation
verfasst von
Young Seok Park
Dong-Seok Kim
Kyu-Won Shim
Jung-Hee Kim
Joong-Uhn Choi
Publikationsdatum
01.04.2009
Verlag
Springer-Verlag
Erschienen in
Child's Nervous System / Ausgabe 4/2009
Print ISSN: 0256-7040
Elektronische ISSN: 1433-0350
DOI
https://doi.org/10.1007/s00381-008-0763-9

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