经食道超声探测食管癌局部淋巴结及临床意义

Transesophageal Ultrasonography for Detecting the Regional Lymph Nodes of Esophageal Carcinomas and Its Clinical Significance

本文总结了８１例中晚期食管瘤纵隔局部淋巴的食道超声检查结果。ＴＵＳ局部淋巴结显示率约４１．０％。ＴＵＳ图像上食管旁淋巴结多呈圆形或类圆形的较均匀的低回声区，边界清晰。切面直径＞１０．０ｍｍ的淋巴结或直径５．０～１０．０ｍｍ但Ｓ／Ｌ＞０．５的淋巴结应提示有癌转移。多数转移淋巴结的边界清晰、锐利。癌肿旁淋巴结相互粘连，结聚或与肿瘤融合常是淋巴结转移的直接征象。ＴＵＳ判断局部淋巴有无转移的准确率为７７．２％，这有助于临床上食管癌的术前ＴＮＭ分期。

The transesophageal ultrasonography of the regional lymph nodes in 81 cases of advanced esophageal carcinoma were summed up in the article. The results showed that most of lymph nodes surrounding esophagus were homogenous hypoechos with clear or nuclear boundaries. Metastastic lesions were suggested when the diameter of lymph nodes was >10. 0mm or 5. 0-10. 0mm but with the short: long axis ratio (S/L) >0. 5. Metastastic lesions occurred in a lot of lymph nodes were clear and sharp boundaris. Lymph nodes near the tumours blended each other or fused with the tumours was usually the direct indication of the lymph node metastasis. The accuracy for transesophageal ultrasonography to detect the mediastinal lymph nodes is 77. 2%. It is helpful to afford clinic information for defining the stages of esophageal carcinoma preoperatively,