摘要
目的分析原发性腹膜后肿瘤的CT表现,旨在提高对腹膜后肿瘤的认识,评价CT在明确腹膜后肿瘤诊断及鉴别诊断中的价值。资料与方法回顾性分析27例经病理证实的原发性腹膜后肿瘤患者的CT表现,并与病理结果对照。对所得结果进行Fishersχ2检验。结果 (1)27例原发性腹膜后肿瘤的CT定位准确性为85.2%(23/27),定性准确性为66.7%(18/27)。(2)恶性肿瘤多表现为不规则形(51.9%,14/27),两者差异有统计学意义(χ2=20.468,P=0.000);而边界、密度及有无强化,二者间差异无明显统计学意义;所有的良性后腹膜肿瘤对周围组织器官均表现为推压改变,而93.3%(14/15)的恶性肿瘤病变则表现为周围组织器官受侵,二者差异有统计学意义(χ2=23.262,P=0.000)。(3)脂肪肉瘤因CT像上可出现脂肪密度影较易诊断(100%,7/7);嗜铬细胞瘤多表现为不同程度的中心区域囊性改变(100%,5/5)。结论 CT能较准确定位和定性原发性腹膜后肿瘤,脂肪肉瘤和嗜铬细胞瘤的CT表现有一定的特征性。
Objective To evaluate the diagnostic value of CT in primary retroperitoneal tumors,in order to improve the diagnosis.Materials and Methods The CT features of 27 patients with primary retroperitoneal tumor were analyzed retrospectively.The CT features were compared with the pathologic findings.All data were analyzed by Fishers χ2 test.Resu-lts（1）Of the 27 primary retroperitoneal tumors,the accuracy of CT localization and qualitative diagnosis were 85.2%（23/27） and 66.7%（18/27） respectively.（2）Malignant tumors had irregular shape,which had significant difference between benign and malignant tumor（χ2=20.468,P=0.000）;while the lesions margin,density and enhancement had no different between benign and malignant tumor.93.3%（14/15） of malignant tumors invaded the surrouding organs,while all the benign tumors compressed the surrouding organs（χ2=23.262,P=0.000）.（3）Liposarcoma was easy diagnosed by detecting fatty density on CT images（100%,7/7）.Five pheochromocytomas showed central cystic density.Conclusion CT could localize and qualitative diagnose accurately.Liposarcoma and pheochromocytoma had some CT characteristics findings.
出处
《临床放射学杂志》
CSCD
北大核心
2011年第6期823-825,共3页
Journal of Clinical Radiology
