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目的 探讨食管癌常规放射治疗野外淋巴结转移的途径和几率，为食管癌放射治疗设野提供科学理论依据。方法 对９８８ 例食管癌手术治疗的患者进行前瞻性研究。以病变两端各延长３ｃ ｍ 为界划分放射治疗野内、外淋巴结。对术后放射治疗野内、外淋巴结转移与病变长度、病理类型及浸润深度做相关分析。结果 全组淋巴结转移率为３９ ．１ ％ ；放射野内、外淋巴结转移率分别为２５ ．２ ％ ，３０ ．４ ％ ；放射野外淋巴结转移率与病变长度、外侵及 Ｔ 分期呈正相关，其中 Ｔ３ ， Ｔ４ 期病变放射野外淋巴结转移率分别为３４ ．８ ％ ，４０ ．０ ％ ；放射野外淋巴结转移与鳞癌和腺癌无明显的相关性。结论 常规食管癌放射野外有较高的淋巴结转移率，值得今后食管癌放射治疗设野时注意。
Objective To explore the route and probability of conventional radiotherapy for esophageal carcinoma in the treatment of field lymph node metastases, and to provide scientific theoretical basis for esophageal cancer radiotherapy establishment. Methods A prospective study was conducted on 988 patients who underwent surgery for esophageal cancer. The radiotherapy for intra- and extra-lymph nodes was divided by the extension of 3 cm at both ends of the lesion. The correlations between intraoperative and extraoperative lymph node metastases and lesion length, pathological types, and depth of invasion were analyzed. Results The total lymph node metastasis rate was 39. 1 % ; Radial lymph node metastasis rate was 25 . 2%, 30. 4% of the radiation metastases were positively correlated with lesion length, extravasation, and T staging, of which T3 and T4 lesions had radiation metastatic lymph node metastases of 34%. 8 %, 40. 0%; Radiation field lymph node metastasis and squamous cell carcinoma and adenocarcinoma no significant correlation. Conclusions Conventional esophageal cancer has a high rate of lymph node metastasis in the field, and it is worth paying attention to the radiation therapy for esophageal cancer in the future.