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目的 分析螺旋CT在十二指肠肿瘤诊断中的价值。方法 所有病例均经手术病理证实。扫描前 16例口服稀释阳性对比剂充盈十二指肠 ,7例口服温开水。 17例CT平扫后行增强动脉期和静脉期扫描 ,4例仅行平扫 ,2例仅行增强扫描。 5例薄层扫描后行多平面重建。结果 十二指肠壶腹外良性肿瘤表现为类圆形软组织密度影 ,恶性肿瘤表现为肠壁局部或弥漫性增厚 ,肠腔不规则狭窄 ,肠外可见受累及转移。壶腹部肿瘤多为恶性肿瘤 ,多表现为较小的充盈缺损或软组织结节影伴随胆道系统的一致性全程扩张。增强扫描病灶呈不同程度的强化。结论 CT检查可直接显示十二指肠肿瘤的范围 ,是十二指肠造影和内窥镜检查的重要补充
Objective To analyze the value of spiral CT in the diagnosis of duodenal tumors. Methods All cases were confirmed by surgery and pathology. 16 cases of oral dilution positive contrast agent before filling the duodenum, 7 cases of oral warm water. Seventeen cases of CT scan enhanced the arterial phase and venous phase scan, 4 cases only plain scan, 2 cases only enhanced scan. Five cases were scanned by multiplanar reconstruction. Results The duodenal extraperitoneal benign tumors showed round soft tissue density. Malignant tumors showed localized or diffuse thickening of the intestinal wall, irregular narrow intestine, involvement and metastasis of parenchyma. Ampullary tumors are mostly malignant tumors, and more performance of smaller filling defects or soft tissue nodules with the expansion of the consistency of the biliary system. Enhanced scan lesions showed varying degrees of enhancement. Conclusion CT examination can directly show the scope of duodenal tumors, duodenum and endoscopy is an important complement