肾脏嗜酸细胞瘤的CT诊断

CT Diagnosis of Renal Oncocytoma

目的：分析肾嗜酸细胞瘤的ＣＴ表现及其病理基础，以提高对此瘤的认识。材料与方法：２例肾嗜酸细胞瘤经病理诊断，术前均行ＣＴ平扫及增强扫描。结果：２例均为单发肿瘤，直径分别为４．８ｃｍ及５．０ｃｍ。ＣＴ特点为：（１）肿块密度多较均匀，无出血、坏死；（２）肿块中心见低密度疤痕；（３）有完整的肿瘤包膜。肿瘤的这些ＣＴ表现与病理改变大体一致。结论：当ＣＴ显示密度较均匀的肿块伴有中心低密度疤痕及完整肿瘤包膜时可提示肾嗜酸细胞瘤。

Objective: To improve the knowlegment of renal oncocytoma, the CT findings correlated with pathologic changes of this tumor were investigated.Materials and Methods:Two patients with renal oncocytoma proved by pathology were studied by means of CT and CT enhanced.Results:Solitary renal masses in 2 cases were 4.8cm and 5.0cm in diameter respectively. CT characteristic manifestations included: (1) homogenous density without hemorrage and necrosis; (2)a scar of hypodensity in center of mass; (3)an intact capsule of mass. CT findings were well correlated with pathologic changes of these tumors.Conclusion: CT could suggested renal oncocytoma where the mass was homogenous density with hypodensity area of central scar, and surrounded by an intact capsule.