Ni Xiao-guang, Cheng Rong-rong, Lai Shao-qing, Zhang Lei, He Shun, Zhang Yue-ming, Wang Gui-qi
Department of Endoscopy, Cancer Institute (Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100021, China.
Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2012 Jul;47(7):545-8.
To investigate the method displaying the hypopharynx and esophageal entrance under laryngoscopy to determine the invasion range of hypopharyngeal cancer.
A total of 113 patients with hypopharyngeal cancer was enrolled in this study and they previously underwent conventional laryngoscopic and radiologic examinations. The esophageal entrance was exposed by injecting gas through the biopsy channel of laryngoscope. The invasion of esophageal entrance in hypopharyngeal cancers was evaluated by this method and compared with that evaluated with radiology.
Conventional laryngoscopy was unable to evaluate appreciably esophageal entrance involvement in the 113 patients with hypopharyngeal cancer. After injecting gas through the laryngoscopic biopsy channel, the esophageal entrance was clearly displayed in 96.5% (109/113) patients, showing the presence (33 cases) and absence (76 cases) of esophageal entrance invasion. Imaging examinations only showed the invasion of the esophageal entrance in 25 patients of these patients,but did not in other 8 patients. Laryngoscopy with injecting gas through the biopsy channel was superior to radiological imaging examinations in determining the invasion of the esophageal entrance (χ² = 9.103, P = 0.003).
Laryngoscopy with injecting gas through the biopsy channel is a useful method for determining the presence or absence of esophageal entrance invasion in hypopharyngeal cancer prior to surgery.
探讨喉镜检查下显示下咽及食管入口以确定下咽癌侵犯范围的方法。
本研究共纳入113例下咽癌患者，他们之前均接受过传统喉镜及影像学检查。通过喉镜活检通道注入气体暴露食管入口。用该方法评估下咽癌对食管入口的侵犯情况，并与影像学评估结果进行比较。
传统喉镜检查无法对113例下咽癌患者的食管入口受累情况进行有效评估。通过喉镜活检通道注入气体后，96.5%（109/113）的患者食管入口得以清晰显示，显示有食管入口侵犯（33例）和无食管入口侵犯（76例）。影像学检查仅显示其中25例患者存在食管入口侵犯，另外8例未显示。通过活检通道注入气体的喉镜检查在确定食管入口侵犯方面优于影像学检查（χ² = 9.103，P = 0.003）。
通过活检通道注入气体的喉镜检查是术前确定下咽癌是否侵犯食管入口的一种有用方法。
