我院应用光动力学疗法(ＰＤＴ)治疗消化道肿瘤35例,现就其疗效分析报告如下。资料和方法1临床资料　35例病人中男性31例,女性4例;年龄9～70岁,平均57岁。食管癌22例,其中病灶位于食管上中段者18例,位于下段者4例;鳞癌19例,腺癌3例;病变长度3～5ｃｍ者18例,>5ｃｍ者4例,最?.. In our hospital, photodynamic therapy (PDT) was used to treat 35 cases of digestive tract tumors. The analysis of its efficacy is reported below. Materials and Methods 1 Clinical data Among the 35 patients, 31 were males and 4 were females; the age ranged from 9 to 70 years and averaged 57 years. There were 22 cases of esophageal cancer, of which the lesions were located in the upper esophagus in 18 cases, in the lower segment in 4 cases; squamous cell carcinoma in 19 cases, adenocarcinoma in 3 cases; lesions 3 to 5cm in 18 cases, >5cm in 4 cases, most?