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A study of the correlation between the compression location and the painful region in classical trigeminal neuralgia by MRN
ZENG Chen  LI Yehan  YAN Wei  CHEN Jiao  ZHANG Chuan  XIAO Ruhui  YANG Hanfeng 

Cite this article as: Zeng C, Li YH, Yan W, et al. A study of the correlation between the compression location and the painful region in classical trigeminal neuralgia by MRN[J]. Chin J Magn Reson Imaging, 2022, 13(7): 103-106. DOI:10.12015/issn.1674-8034.2022.07.018.


[Abstract] Objective To evaluate the correlation between the compression site and the pain region in patients with classical trigeminal neuralgia by magnetic resonance neuroimaging.Materials and Methods Seventy-seven cases of classical trigeminal neuralgia were retrospectively analyzed. The neurovascular compression sites were divided into upper and lower sides, which were classified by two senior radiologists, and the agreement evaluation was performed using the Kappa test. The odds ratio (OR) between the compression location and the painful region was calculated using the χ2 test.Results The Kappa value of classification in the two groups was＞0.75, with good consistency. The OR of ophthalmic branch regional pain was 1.53 for compression from the upper side of the nerve compared with compression from the lower side of the nerve, 95% CI was 1.13-2.07, P＜0.05.Conclusions Compression from the upper side of the trigeminal nerve root is more likely to be the cause of pain in the region innervated by the ophthalmic branch. When imaging reveals that the location of compression is not consistent with the distribution of pain, surgical treatment of patients is avoided. At this point, imaging of the trigeminal nerve branches and a detailed clinical history are required to rule out secondary trigeminal neuralgia.
[Keywords] magnetic resonance imaging；magnetic resonance neuroimaging；trigeminal neuralgia；location；painful region

ZENG Chen   LI Yehan   YAN Wei   CHEN Jiao   ZHANG Chuan   XIAO Ruhui   YANG Hanfeng*  

Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China

Yang HF, E-mail: yhfctjr@yahoo.com

Conflicts of interest   None.

ACKNOWLEDGMENTS Scientific Research Innovation Team Project of Sichuan Provincial Education Department (No. 18TD0028); Special Project for Scientific and Technological Strategic Cooperation of Nanchong City and School (No. 19SXHZ0446).
Received  2021-09-29
Accepted  2022-07-01
DOI: 10.12015/issn.1674-8034.2022.07.018
Cite this article as: Zeng C, Li YH, Yan W, et al. A study of the correlation between the compression location and the painful region in classical trigeminal neuralgia by MRN[J]. Chin J Magn Reson Imaging, 2022, 13(7): 103-106. DOI:10.12015/issn.1674-8034.2022.07.018.

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