Renal pseudotumors: CT diagnosis and differential diagnosis
- VernacularTitle:肾假性肿瘤的CT诊断与鉴别诊断
- Author:
Sujian LI
;
Junqiang XIAO
- Publication Type:Journal Article
- Keywords:
Renal pseudotumor;
Renal carcinoma;
Tomography;
X-ray computed
- From:
Journal of Medical Postgraduates
2003;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To evaluate the CT features of renal pseudotumors and the differential diagnosis with renal carcinomas and other benign tumors, emphasis on the origin of pseudotumors and the factors liable to be misdiagnosed.Methods:Unenhanced and enhanced spiral CT findings in 23 cases of renal mass were retrospectively evaluated.13 of them(inflammatory pseudotumor, 5 cases;Xanthogranulomatous pyelonephritis,2 cases;granulomatous inflammation,1 case;liparomphalus hyperplasia,1case;fibroangiolipoid hyperplasia,1 case;adenomyosis,1 case;and hematomas,2 cases) were resected and pathologically confirmed.The others\ were diagnosed by IA-DSA or followed up after the treatment.Results:Most inflammatory and hyperplasia diseases appeared as a solid or solid-cystic heterogeneous mass,with an ill-defined margin;Calcification or fat tissues sometimes could be seen.After intravenous administration of iodinated contrast media,the solid components enhanced mildly or moderately.Cystic components,infiltration of fatty renal capsule and thickening of renal fascia could be seen.Hematomas and aneurysms appeared as isoattenuation to hyperattenuation lesions,with a well-demarcated margin.Aneurysms demonstrated intense enhancement similar to the abdominal aorta.Acute hematomas could enhanced mildly.Conclusion:CT is helpful to the diagnosis and differential diagnosis of renal pseudotumors.
