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目的 评价多层螺旋CT及其后处理技术在诊断原发性十二指肠癌的价值.资料与方法 对7例经手术后病理证实的原发性十二指肠癌患者的多层螺旋CT表现进行回顾性分析.结果 7例中有4例表现为局部软组织肿块影;3例表现为管壁增厚和管腔狭窄;同时表现为局部软组织肿块和管壁增厚、局部管腔狭窄者2例;与胰头分界不清2例;肝内转移1例;肺内转移1例;增强扫描表现为软组织肿块者在动脉期有明显强化,静脉及延迟期强化部分消退明显.结论 多层螺旋CT及其后处理技术对原发性十二指肠癌的诊断和手术分期及指导治疗有价值.“,”Objective To evaluate the value of multi-slice CT (MSCT) in diagnosis of the primary carcinoma of the duodenum. Materials and Methods MSCT findings of 7 patients with primary carcinoma of the duodenum proved by surgical pathology were reviewed. Results 4 cases showed as local masses. 3 cases manifested as ductal wall irregular or circular thickening. 2 cases shown both features of local masses and dutal wall thickening. 2 lesions involved head of pancreas. Metastasis to lung and liver were also found. After enhancement,the masses exhibited intense enhancement on the artery phase, and decreased enhancement on delay phase. Conclusion MSCT and post-processing techniques play an important role in both the localization and qualitative diagnosis of the primary carcinoma of duodenum.