\n\n
大约 6% 的甲状腺恶性肿瘤有明显的侵袭性[1],会侵犯周围组织,特别是喉返神经[2]。
\n\n医生在手术前做喉镜,就是要观察您有没有声带麻痹,这是喉返神经受损的一个征象,进而提示肿瘤的侵袭性强,恶性程度高。
\n\n您可能会想,声带麻痹不是可以通过声音的改变而发现吗?事实上,有研究发现[3],在 300 多名出现声带麻痹的侵袭性甲状腺肿瘤患者中,只有三分之一有声音改变。
\n\n如果您在就诊时已经有声音嘶哑,医生可能建议术前做喉镜检查,不仅可以了解肿瘤侵犯程度,还有助于术中麻醉插管。
\n\n除了喉镜,医生有时也通过超声、CT 来观察声带情况。但有研究发现,确有声带麻痹的患者,CT 发现的比例仅为 25%[3]。这说明 CT 对声带麻痹诊断准确性远不及喉镜。
\n\n甲状腺癌手术损伤喉返神经的几率约为 0.3% ~3.0%[4]。导致术后声音嘶哑、饮水呛咳。但并不意味着只要出现这些症状,就一定是喉返神经损伤,也可能与术中麻醉插管损伤有关。术后 6 个月,大约一半患者的声带功能可以恢复正常[3]。
\n\n因此,医生可能建议一部分患者做喉镜检查,来明确喉返神经损伤情况。
\n\n相关阅读:
\n\n \n\n共同撰写:复旦大学附属肿瘤医院 郑晓珂医生
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