肾嗜酸细胞瘤CT诊断

CT Diagnosis of Renal Oncocytoma.

目的研究肾嗜酸细胞的CT表现,提高对其的诊断正确率。方法回顾分析7例经手术病理证实的肾嗜酸细胞瘤的CT表现。结果肿瘤向皮质外生长为主3例,向肾盂方向生长为主2例,2例完全位于肾实质内。平扫;肿瘤4例表现为较均质密度。3例密度欠均匀,其中2例内示星芒状边缘锐利低密度,1例内部示多发类圆形低密度,2例出现钙化。增强皮质及髓质期呈较均质强化4例,不均质强化3例,强化均低于肾皮质。肾盂期密度较前下降,然不低于同层面肌肉密度,与正常肾组织分界清晰,2例示完整假包膜。结论肾嗜酸细胞瘤除中心瘢痕外密度相对均匀,可有钙化,界清,可有完整包膜。增强后较均质明显强化,肾盂期不低于同层面肌肉密度。具有完整假包膜及中心瘢痕时诊断较明确。其他表现不典型时需结合临床综合分析。

Objective To study the renal oncocytoma CT eosinophil performance, improve the rate of correct diagnosis. Methods Retrospective analysis of seven cases confirmed by pathology of renal oncocytoma CT. Results Tumor cortex to the growth mainly three cases to the pelvis grow mainly two cases, two cases are located entirely within the renal parenchyma. Plain ; Four cases of tumor performance for the more homogeneous density. Three cases density uniform, which show two cases within Stelletta tenui Lindgren - sharp edge, low - density, one cases show multiple internal circular low - density category, there calcification in 2 cases. Enhanced cortex and medulla period was more homogeneous strengthen four cases, three cases heterogeneous enhance and strengthen below the renal cortex. Pelvis period density decreased, but the level not lower than the same muscle density, and normal kidney tissue clear, two cases showed a complete fake capsule. Conclusions Renal oncocytoma scar except center outside homogeneous enhancement, pelvis with a period of not less than muscle density levels, and normal kidney tissue. Coated with a complete sham and center when scar more precise diagnosis. Other typical performance required when combined with clinical analysis.