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目的：探讨原发性输尿管移形细胞癌的ＣＴ表现及ＣＴ检查对该病的诊断价值。材料与方法：８例患者均作了ＣＴ平扫与增强扫描，其中３例４～８小时后还作了延迟扫描。全部病例均经手术、病理证实为移行细胞癌。结果：原发性输尿管移形细胞癌直接ＣＴ征象为管壁的不规则增厚及管腔的不规则狭窄，部分表现局部软组织肿块，位于下端的可突入膀胱。间接征象为肾盂肾盏扩张、淋巴结转移及输尿管瘘。ＣＴ检查既可观察腔内病变又可显示腔外肿瘤情况及远处转移，且为无创性检查。结论：ＣＴ检查是诊断原发性输尿管癌的有效手段。
Objective: To investigate the CT findings of primary ureteral migratory cell carcinoma and the diagnostic value of CT in the diagnosis of the disease. Materials and Methods: All 8 patients underwent CT scan and contrast enhanced scan. Three of them were delayed scan after 4 ~ 8 hours. All cases were surgically confirmed pathologically as transitional cell carcinoma. Results: The direct CT signs of primary ureteric transitional cell carcinoma were irregular thickening of the wall and irregular stenosis of the lumen. Some of them showed partial soft tissue mass, which could protrude into the bladder at the lower end. Indirect signs of renal pelvis calyx expansion, lymph node metastasis and ureteral fistula. CT examination can both observe intracavitary lesions and can show extracavitary tumor situation and distant metastasis, and non-invasive examination. Conclusion: CT examination is an effective method to diagnose primary ureteral cancer.