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目的 探讨十二指肠低张力下CT与MR对壶腹周围癌的诊断价值。方法 收集本院 3 0例经手术病理证实的有完整CT、MR资料的壶腹周围癌进行回顾性分析。结果 3 0例患者均有不同程度的胆道系统低位梗阻 ,有 2 6例CT或MR较清晰地显示了肿瘤的部位、大小以及与周围组织结构的关系。其中有 18例显示了肿瘤与十二指肠降段呈“指套样”改变。另 4例中 1例壶腹区肿块隐约可见 ,有 3例壶腹区未见确切占位。结论 十二指肠降段“指套样”征和壶腹区肿块的显示是壶腹周围癌的特征性表现 ,低张力CT与MR是壶腹周围癌行之有效的诊断方法
Objective To investigate the diagnostic value of CT and MR for periampullary carcinoma under duodenal low tension. Methods A retrospective analysis of 30 cases of periampullary carcinoma with complete CT and MR data confirmed by operation and pathology in our hospital was performed. Results All 30 patients had different degrees of obstruction of the biliary system, and 26 cases of CT or MR clearly showed the location and size of the tumor and the relationship with the surrounding tissue structure. Of these, 18 showed a “finger-like” alteration of the tumor and the descending segment of the duodenum. Another 4 cases in 1 case of ampulla lumps visible, there are no cases of amputation in 3 cases. Conclusions The “finger-like” sign and ampulla area of duodenal descending segment are characteristic features of periampullary carcinoma. Low-tension CT and MR are effective diagnostic methods for periampullary carcinoma