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Journal of The Korean Society of Laryngology, Phoniatrics and Logopedics 2007;18(1): 67-70. |
| 비회귀성 후두 신경; 수술 전 경부 CT를 통한 신경 손상의 예방 |
| 김진성, 소상수, 최동일, 양윤수, 홍기환 |
| 전북대학교 의과대학 이비인후-두경부외과학교실 |
| Nonrecurrent Laryngeal Nerve; Prevention of Neural Injury by Preoperative Neck CT |
| Jin-Sung Kim, Sang-Soo So, Dong-Il Choi, Yun-Su Yang, Ki-Hwan Hong |
| Department of Otolaryngology-Head and Neck Surgery, Medical School, Chonbuk National University |
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| ABSTRACT |
Background and Objectives:
The nonrecurrent laryngeal nerve(NRLN) is exceedingly rare nerve anomaly that is associated with developmentally aberrant subclavian artery. The presence of NRLN is associated with an increased risk of vocal cord palsy in thyroid surgery. The purpose of this study is to investigate its prevalence, associated vascular anomaly and necessity of recognizing its possibility for prevention of intraoperative nerve damage.
Materials and Methods:
Between January 2004 and December 2006, 583 thyroidectomy were performed at our hospital. Of these cases, 529 cases(90.7%) were checked preoperative neck CT.
Results:
Patients with preopreative neck CT, 6 cases show the retroesophageal abberant right subclavian artery that arising directly form the aortic arch. 5 cases of these 6 cases(5/6, 83.3%) and of 583 patients(5/583, 0.8%) performed thyroid surgery were identified NRLN per-operatively. All of them are identified on the right side. There were 4 women and 1 man. In all cases, there were no clinical symptoms. I case was performed only left hemithyroidectomy, so we cannot identified NRLN. No vocal cord palsy was observed.
Conclusion:
It is possible to predict NRLN from preoperative neck CT. When NRLN is suspected, careful, complete dissection of the nerve is always advocated. These process can reduce the operative morbidity. |
| KEY WORDS：
Nonrecurrent laryngeal nerve;Preoperative neck CT.; |
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