Conclusion Laryn goscopy could give an accurate assessment of tumor by examining the shape and position of tumor.It is helpful to select proper surgical approach and treatment.

• 结论 术前通过内窥镜对肿瘤外形及扩展部位的观察，有助于术前准确判断肿瘤分期，同时对选择合理的治疗方案有重要价值。