·2,447,543篇论文数据，部分数据来源于NoteExpress
The esophageal lesions in 27 patients with medullary esophageal carcinoma in the middle segment of the esophagus were observed with endoscopy before and after radiotherapy.
对27例中晚期食管癌中段髓质型鳞癌患者进行放疗前后的食管病变疗效观察。
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