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目的：探讨 ＣＴ对喉癌术前分期的准确性。材料与方法：９１例经手术切除的喉癌，用 ＣＴ观察肿瘤的侵犯范围、有无喉软骨受侵及颈部淋巴结转移；按双盲法根据ＣＴ征象进行分期并与手术病理结果对照分析。结果ＣＴ术前肿瘤（Ｔ）分期的准确性为８４％，诊断颈部淋巴结转移及喉软骨受侵的敏感性、特异性、准确性分别是８０％、９４％、９１％和７０％、９６％、９３％，判断肿瘤侵犯周围结构的准确性在 ８７％～１００％之间。结论： ＣＴ能很好地显示肿瘤的侵犯范围及有无颈部淋巴结转移，对喉癌的术前分期有较高的准确性，失误的主要原因包括不能显示轻微的甲状软骨破坏、不易诊断正常大小的颈部淋巴结转移。
Objective: To investigate the accuracy of CT in the preoperative staging of laryngeal cancer. Materials and Methods: Totally 91 cases of laryngeal carcinoma resected surgically were enrolled in this study. CT was used to observe the extent of tumor invasion, laryngeal cartilage invasion and cervical lymph node metastasis. The patients were staged by double-blind method and compared with the pathological findings. Results The accuracy of CT staging was 84%. The sensitivity, specificity and accuracy of diagnosing cervical lymph node metastasis and laryngeal cartilage invasion were 80%, 94%, 91% and 70%, respectively. 96 %, 93%, to determine the accuracy of tumor invasion of the surrounding structure between 87% to 100%. Conclusion: CT can show the extent of tumor invasion and neck lymph node metastasis well, and has a high accuracy for the preoperative staging of laryngeal carcinoma. The main causes of the failure include the failure to show mild thyroid cartilage damage and the poor diagnosis of normal Size of cervical lymph node metastases.