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本文报告经病理证实的原发性胆管癌21例和壶腹癌10例,均为腺癌。着重分析了胆管癌和壶腹癌的直接和间接CT征象以及它们的特征性表现。CT扫描的准确率为80.6％（25/31）。还就本病的CT诊断、鉴别诊断、误诊原因以及CT扫描技术等问题进行了讨论。认为CT诊断原发性胆管癌和壶腹癌是有效、准确的检查方法。
In this report, 21 cases of primary cholangiocarcinoma confirmed by pathology and 10 cases of ampullary carcinoma were reported as adenocarcinoma. The direct and indirect CT signs of cholangiocarcinoma and ampullary carcinoma and their characteristic performance were emphatically analyzed. The accuracy of CT scan was 80.6% (25/31). The CT diagnosis, differential diagnosis, misdiagnosis reasons, and CT scan techniques were also discussed. CT is considered to be an effective and accurate method for the diagnosis of primary cholangiocarcinoma and ampullary carcinoma.