【摘要】 目的总结肾嗜酸性细胞腺瘤(RO)的CT表现,提高对RO的诊断水平。方法回顾性分析经术后病理证实的7例RO的影像学资料,所有的患者均行CT平扫及动态增强扫描,记录病灶的部位、形态、大小、密度、包膜及强化模式,分别测量病灶在CT平扫、增强扫描皮质期、实质期及排泄期的CT值。结果 CT平扫:7例RO平均直径4.1cm,2例可见包膜,平均CT值为39Hu,所有病灶均未见钙化;4例密度均匀,2例病灶内见瘢痕样低密度影,1例见小囊状低密度灶。动态增强CT:实质部分在皮质期的平均CT值为109Hu、实质期为123Hu、排泄期为105Hu;2例病灶的中心瘢痕呈轻微强化,2例病灶表现为皮质期至排泄期的节段性强化逆转,2例包膜轻度延迟强化。结论 RO的CT动态增强扫描的表现有一定的特征性,在RO的诊断中有重要的价值。更多还原

【Abstract】 Objective To explore the CT features of renal oncocytoma (RO) and improve the diagnostic accuracy of this disease. Methods CT data of 7 cases with pathological proved RO were analyzed retrospectively. All the 7 cases with RO comfirmed by postoperative pathology or biopsy were enrolled in the study. All the patients underwent CT plain scan and dynamic enhancement (cortical, parenchymal and excretory phase). The tumor signs on dynamic enhancement CT, including the location, shape, size, density, margin, the patterns of enhancement and CT values on plain scan and dynamic enhancing phases were recorded. Results Plain CT scan revealed that average diameter of the 7 tumors was 4.1 cm. Two of them were encapsulated. The average CT value in plain CT scan was 39 Hu. No calcification was found. Four cases were homogeneous while central scar was found in 2 cases, and small cystic low density in 1 case. Dynamic enhancement scan indicated that solid portion of the tumors were persistent enhancement obviously, with the average CT values of 109, 123 and 105 Hu respectively at cortical, parenchymal and excretory phase. The central scar (2 cases) had slight enhancement. Two cases presented segmental enhancement inversion. Capsule light enhancement was found in 2 cases. Conclusions The CT findings of RO are potential characteristic. CT dynamic enhancement scan plays an important role in the diagnosis of this disease.更多还原