scholarly journals Schwannomatosis of the Spinal Accessory Nerve: A Case Report

2019 ◽  
Vol 14 (01) ◽  
pp. e9-e13
Author(s):  
Ramin Morshed ◽  
Anthony Lee ◽  
Young Lee ◽  
Cynthia Chin ◽  
Line Jacques

AbstractSchwannomatosis is a distinct syndrome characterized by multiple peripheral nerve schwannomas that can be sporadic or familial in nature. Cases affecting the lower cranial nerves are infrequent. Here, the authors present a rare case of schwannomatosis affecting the left spinal accessory nerve. Upon genetic screening, an in-frame insertion at codon p.R177 of the Sox 10 gene was observed. There were no identifiable alterations in NF1, NF2, LZTR1, and SMARCB1. This case demonstrates a rare clinical presentation of schwannomatosis in addition to a genetic aberration that has not been previously reported in this disease context.

2010 ◽  
Vol 96 (5) ◽  
pp. 589-592 ◽  
Author(s):  
N.N. Sergides ◽  
D.D. Nikolopoulos ◽  
I.G. Polyzois

2003 ◽  
Vol 15 (1) ◽  
pp. 51-54
Author(s):  
Nuray Kirdi ◽  
Edibe Yakut ◽  
Tuzun Firat ◽  
Deran Turan ◽  
Gursel Leblebicioglu

1987 ◽  
Vol 65 (9) ◽  
pp. 2236-2240 ◽  
Author(s):  
Bruce A. Young

A generalized description is given of the form and peripheral distribution of all cranial nerves of Hydrophis melanocephalus, Lapemis hardwickii, and Aipysurus eydouxii. Results presented here agree with the studies of Auen and Langebartel (Auen, E. L., and Langebartel, D. A. 1977. J. Morphol. 154(2): 205–222) regarding the presence of the ocular trunk and the absence of the spinal accessory nerve, and differ from those reported by Agarwal and Sharma (Agarwal, P. N., and Sharma, S. 1979. Indian J. Zool. 7(1): 23–34).


2010 ◽  
Vol 12 (1) ◽  
pp. 22-24 ◽  
Author(s):  
R. Shane Tubbs ◽  
William Stetler ◽  
Robert G. Louis ◽  
Ankmalika A. Gupta ◽  
Marios Loukas ◽  
...  

Object The spinal accessory nerve (SAN) has been reported to have a distinctly coiled appearance in its course through the posterior cervical triangle of the neck. As this is unusual compared with other peripheral nerves including the cranial nerves, the present histological analysis was performed to further elucidate the reason for this anatomy with potential application in nerve injury and repair. Methods Ten adult cadavers underwent dissection of the neck. The SAN was harvested proximally and within the posterior cervical triangle. For comparison with other cranial nerves within the neck, the cervical vagus and hypoglossal nerves were also harvested. All nerves underwent histological analysis. Additionally, 2 human fetuses (11 and 20 weeks' gestation) underwent examination of the SAN in the posterior cervical triangle, and 3 randomly selected specimens were submitted for electromicroscopy. Results All SANs were found to have a straight gross configuration proximal to the posterior triangle and a coiled appearance within this geometrical area. Histologically, no differences were identified for the SAN in these 2 locations (that is, proximal to and within the posterior cervical triangle). The histology of the SAN both with routine analysis and electron microscopy was similar in both regions and to nerves used as controls (for example, vagus and hypoglossal nerves). Interestingly, both fetal specimens were found to have coiled SANs in the posterior cervical triangle. Conclusions Based on this study, it appears that the tortuous course of the SAN in the posterior triangle arises from functional as opposed to structural forces. It is hoped that this analysis will provide some insight into the nature behind the morphology observed in the SAN within the posterior cervical triangle and aid in future investigations regarding its injury. Moreover, such a coiled nature of this nerve may assist the neurosurgeon in identifying it during, for example, neurotization procedures.


2003 ◽  
Vol 43 (10) ◽  
pp. 501-504 ◽  
Author(s):  
Shizuo HATASHITA ◽  
Takashi MITSUHASHI ◽  
Akihiro KUROSU ◽  
Hideo UENO

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