摘要
目的探讨肾嗜酸性细胞腺瘤CT表现,旨在提高其诊断准确率。方法搜集11例经病理证实的肾嗜酸性细胞腺瘤的CT资料进行回顾分析,所有病例均行MSCT多期扫描(平扫、增强皮质期及实质期),其中2例进行了排泄期增强扫描。结果 11例肾嗜酸性细胞腺瘤均单发,病灶最大径约1.3～14.0cm;平扫显示密度均匀7例,密度不均匀且中央可见不规则瘢痕者4例,其中瘢痕内钙化者3例;所有病例增强后皮质期均显示肿瘤实质明显强化,但强化程度低于肾皮质10～50HU,而实质期病灶强化程度减低;增强扫描显示中央瘢痕者6例,低密度假包膜者6例。结论肾嗜酸性细胞腺瘤有一定的CT特征性表现,病灶中心瘢痕,瘢痕内钙化及假包膜可提示嗜酸性细胞腺瘤的诊断。
Objective To evaluate the CT features of renal oncocytoma so as to improve the diagnostic accuracy. Methods The CT features of 11 renal oncocytomas were analysed retrospectively. All the cases were verified by the pathology and underwent multiple CT scan, including pre-contrast, the contrast cortical phase and the parenchymal phase. Two patients also underwent the excretory phase. Results The eleven renal oncocytomas were single and the maximum diameter was ranged from 1.3-14 cm. On pre-contrast scan, the homogeneous density feature was found in 7 tumors, the central scar feature was found in 4 tumors while the calcification was manifested in the central scar of 3. On the contrast enhancement imaging, the parenchyma of tumor was obviously enhanced in the cortical phase, but enhancement degree was lower than renal cortex about 10-50 HU. While, the enhancement degree was attenuated in the parenchymal phase. The central scar feature was found in 6 tumors and the psuedocapsule feature manifested low density was found in 6 tumors on contrast enhancement imaging. Conclusions The certain topical features such as central scar, calcification in the central scar and pseudocapsule, were found in renal oncocytoma and prompted the diagnosis of renal oncocytoma.
出处
《医学影像学杂志》
2013年第6期927-929,934,共4页
Journal of Medical Imaging
