Cranio-Cervical Decompression for Chiari Type I-Malformation, Adding Extreme Lateral Foramen Magnum Opening and Expansile Duroplasty with Arachnoid Preservation. Technique and Long-Term Functional Results in 44 Consecutive Adult Cases – Comparison with Literature Data

2002 ◽  
Vol 144 (10) ◽  
pp. 1005-1019 ◽  
Author(s):  
M. Sindou ◽  
J. Chávez-Machuca ◽  
H. Hashish
Keyword(s):  
Functional Results ◽  
Foramen Magnum ◽  
Type I ◽  
Chiari Type ◽  
Chiari Type I Malformation ◽  
Preservation Technique ◽  
Chiari Type I

The Association of Chiari Type I Malformation and Neurofibromatosis Type 1

1993 ◽  
Vol 32 (3) ◽  
pp. 189-190 ◽  
Author(s):  
Joseph Dooley ◽  
Daniel Vaughan ◽  
Michael Riding ◽  
Peter Camfield
Keyword(s):  
Neurofibromatosis Type 1 ◽  
Chiari Malformation ◽  
Neurofibromatosis Type ◽  
Foramen Magnum ◽  
Type I ◽  
Chiari Type ◽  
Chiari Type I Malformation ◽  
Chiari Type I ◽  
Chiari Malformations

The association of neurofibromatosis type 1 (NF1) with Chiari malformations of the cerebellum and brain stem has been reported on only two previous occasions.1,2 The pathogenesis of both conditions has remained unclear, although the Chiari type I malformation is most likely due to hypoplasia of the posterior fossa with subsequent extension of the cerebellum through the foramen magnum.3 NF1 is also associated with a variety of cerebral dysplasias.4 We present a patient with both of these dysplastic lesions whose Chiari malformation was asymptomatic.

scholarly journals Improvement of syrinx resolution after tonsillar cautery in pediatric patients with Chiari Type I malformation

2016 ◽  
Vol 17 (2) ◽  
pp. 174-181 ◽  
Author(s):  
Kevin M. Stanko ◽  
Young M. Lee ◽  
Jennifer Rios ◽  
Adela Wu ◽  
Giovanna W. Sobrinho ◽  
...  
Keyword(s):  
Perioperative Complications ◽  
Binary Logistic Regression ◽  
Foramen Magnum ◽  
Type I ◽  
Binary Logistic Regression Model ◽  
Cerebrospinal Fluid Flow ◽  
Chiari Type ◽  
Chiari Type I Malformation ◽  
Surgical History ◽  
Chiari Type I

OBJECT Chiari Type I malformation involves caudal displacement of the cerebellar tonsils below the foramen magnum, which obstructs normal cerebrospinal fluid flow and increases intracranial pressure. Certain aspects of its surgical treatment remain controversial. A retrospective study was conducted to assess the efficacy of tonsillar cautery on syrinx resolution among pediatric Chiari patients undergoing cervicomedullary decompression. METHODS A retrospective cohort study was performed for patients 0–18 years of age who underwent surgical correction for Chiari Type I malformation with syrinx between 1995 and 2013. Basic demographic information was collected as well as data for preoperative symptoms, prior surgical history, perioperative characteristics, and postsurgical outcomes. Descriptive statistics were performed in addition to bivariate analyses. Candidate predictor variables were identified based on an association with tonsillar cautery with p < 0.10. Forward stepwise likelihood ratio was used to select candidate predictors in a binary logistic regression model (Pin = 0.05, Pout = 0.10) most strongly associated with the outcome. RESULTS A total of 171 patients with Chiari Type I malformation with syrinx were identified, and 43 underwent tonsillar cautery. Patients who underwent tonsillar cautery had 6.11 times greater odds of improvement in their syrinx (95% CI 2.57–14.49, p < 0.001). There was no effect of tonsillar cautery on increased perioperative complications as well as the need for repeat decompressions. CONCLUSIONS Tonsillar cautery is safe and effective in the treatment of Chiari Type I malformation with syrinx and may decrease time to syrinx resolution after cervicomedullary decompression. Tonsillar cautery does not increase postoperative complications in pediatric Chiari Type I malformation patients.

Factors contributing to improvement of syringomyelia after foramen magnum decompression for Chiari type I malformation

2014 ◽  
Vol 19 (3) ◽  
pp. 418-423 ◽  
Author(s):  
Narihito Nagoshi ◽  
Akio Iwanami ◽  
Yoshiaki Toyama ◽  
Masaya Nakamura
Keyword(s):  
Foramen Magnum ◽  
Type I ◽  
Foramen Magnum Decompression ◽  
Chiari Type ◽  
Chiari Type I Malformation ◽  
Chiari Type I

Arnold-Chiari type I malformation presenting as benign paroxysmal positional vertigo in an adult patient

2006 ◽  
Vol 121 (3) ◽  
pp. 296-298
Author(s):  
M Unal ◽  
C Bagdatoglu
Keyword(s):  
Benign Paroxysmal Positional Vertigo ◽  
Foramen Magnum ◽  
Upper Cervical Spine ◽  
Type I ◽  
Chiari Type ◽  
Chiari Type I Malformation ◽  
Positional Vertigo ◽  
Upper Cervical ◽  
Chiari Type I ◽  
Paroxysmal Positional Vertigo

Arnold-Chiari malformations are a group of congenital hindbrain and spinal cord abnormalities characterized by herniation of the contents of the posterior cranial fossa caudally through the foramen magnum into the upper cervical spine. It is important to recognize Arnold-Chiari type I malformation in the differential diagnosis of adult vertigo cases. We present a 51-year-old patient with Arnold-Chiari type I malformation that was initially diagnosed as posterior semicircular canal benign paroxysmal positional vertigo.

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