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目的 :分析经手术病理证实的腹膜后炎性假瘤的CT增强前后表现 ,以进一步认识腹膜后炎性假瘤的CT特征。材料和方法 :搜集1990年10月至1997年9月经手术病理证实且资料完整的11例腹膜后炎性假瘤 ,全部病例均在CT平扫发现病变后 ,又静脉团注100ml碘海醇(欧乃派克)行增强CT扫描。结果 :11例CT增强前、后成像均显示边缘形态不规则的肿块 ,直径大小为3.5～5.0cm ;其中8例前缘和侧缘有长短各异(5～20mm)、粗细不等的毛刺 ,3例无明显毛刺。11例中 ,7例CT平扫肿块密度均匀 ,增强后轻度均匀强化 ;4例CT平扫肿块密度不均匀 ,增强后轻度不均匀强化。结论 :腹膜后炎性假瘤的CT特征为软组织肿块 ,形态不规则伴有长短和粗细不一的毛刺。此特征对正确诊断和鉴别诊断具有重要意义。
Objective : To analyze the CT enhancement of retroperitoneal inflammatory pseudotumor confirmed by operation and pathology to further understand the CT features of retroperitoneal inflammatory pseudotumor. Materials and Methods: 11 cases of retroperitoneal inflammatory pseudotumor confirmed by surgery and pathology from October 1990 to September 1997 were collected. All cases were found to have umbilical iohexol after intravenous CT scan. O’Neill Parker) enhanced CT scan. RESULTS: All 11 cases of CT enhancement before and after imaging showed irregular marginal masses with diameters ranging from 3.5 to 5.0 cm; 8 of them had short and long (5 to 20 mm) burrs of varying lengths at the leading and lateral margins. There were no obvious glitches in 3 cases. In 11 cases, the density of the CT plain scan was uniform in 7 cases and was evenly enhanced after the enhancement. In 4 cases, the density of the CT plain scan mass was uneven, and the enhancement was slight after the enhancement. Conclusion : The CT features of retroperitoneal inflammatory pseudotumor are soft tissue masses with irregular burrs of varying length and thickness. This feature is important for correct diagnosis and differential diagnosis.