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目的 :分析食管癌肿瘤外侵的范围和规律 ,探讨食管癌定位时照射野的合理使用。方法 :将 96例食管癌患者的食管造影 X线片和 CT片 ,采用双盲的方法分别阅片和记录。X线片主要观察其病变部位和 X线病理类型 ,CT片主要观察肿瘤外侵及外侵同食管腔的关系 ,以及纵隔淋巴结转移的情况。结果 :髓质型和食管上段的食管癌肿瘤外侵最明显分别为 83.8%和 85 .7% ,食管下段癌淋巴结转移最明显为 36 .3%。食管癌肿瘤外侵 83.3%为非对称性外侵。结论 :传统的以食管腔为射野中心的定位方法盲目性较大 ,应采用以肿瘤为射野中心的 CT定位
OBJECTIVE: To analyze the extent and rules of esophageal cancer invasion and to explore the reasonable use of irradiation field in esophageal cancer localization. Methods: 96 cases of esophageal cancer patients esophageal radiography and CT films were double-blind method were read and recorded. X-ray film mainly to observe the lesion and X-ray pathological types, CT film mainly observe the relationship between tumor invasion and esophageal invasion and mediastinal lymph node metastasis. Results: The most obvious invasion of esophageal carcinoma in medullary and upper esophagus was 83.8% and 85.7%, respectively. The most obvious lymph node metastasis in the lower esophagus was 36.3%. Overexpression of esophageal cancer 83.3% of the asymetric invasion. Conclusion: The traditional localization method based on the esophageal lumen center is more blind. The CT localization with the tumor as the center of the radiograph should be adopted