The CT features of recurrent laryngeal nerve paralysis
- VernacularTitle:喉返神经麻痹的CT表现
- Author:
Bin WU
;
Weijun PENG
;
Yajia GU
;
Hongshi WANG
;
Tianxi YANG
- Publication Type:Journal Article
- Keywords:
Recurrent laryngeal nerve;
Paralysis;
Tomography;
X-ray computed
- From:
Chinese Journal of Radiology
2001;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To describe the CT appearance of recurrent laryngeal nerve paralysis,discuss the anatomic and pathologic basis of this paralysis,and evaluate CT diagnosis.Methods 32 cases of recurrent laryngeal nerve paralysis clinical confirmed were analyzed retrospectively.All of these patients had the CT scans from the level of hyoid bone to the upper thorax,the slice and interval are 5 mm.Results CT findings of recurrent laryngeal nerve paralysis included: oblique of aryepiglottic fold,dislocation of arytenoids cartilage and cricoarytenoid joint,dilation and relaxation of piriform sinus for 27 cases (84.4%);wide and asymmetrical ventricle of larynx for 16 cases(50.0%);asymmetrical and fix of vocal fold for 11 cases(34.4%) et al.Conclusion The recurrent laryngeal nerve innervate all the intrinsic muscles of the larynx except cricothyroid muscle,paralysis of the nerve leads to atrophy of related muscles.CT scan demonstrate the larynx morphologic changes of recurrent nerve paralysis and is helpful to identify the etiology.
