肾嗜酸细胞腺瘤的MSCT的诊断

Diagnosis of Renal Oncocytoma of MSCT

目的认识、总结肾嗜酸细胞腺瘤(RO)的MSCT(多排螺旋CT)表现特征,以提高对本病的CT诊断认识。方法回顾性分析本院8例RO的资料,所有病例均实行MSCT平扫加多期增强扫描,分析病灶的MSCT特点。结果所有8例RO均为单发,CT平扫,平均CT值41HU,所有各病例均无钙化灶。病灶直径3.2cm-6.5cm,6例(75%)病灶边缘清楚,形态规则,无分叶,2例(25%)病灶边缘部分不清楚,形态规则,无分叶。3例(37.5%)见星状或条索状瘢痕。增强扫描,RO病灶均呈中高度强化,皮质期平均CT值约115,实质期平均CT值约128,排泄期平均CT值约105,强化特点为"速升缓降"改变,2例病灶内瘢痕呈延迟强化表现,2例病灶增强扫描皮质期与实质期、排泄期"强化逆转"(图2-4);结论RO具有一定的影像学特点,MSCT平扫加多期增强扫描有助于该病的诊断。

Objective To summarize knowledge of renal oncocytoma （RO） of MSCT （multi-slice spiral CT） performance characteristics, in order to improve the understanding of CT diagnosis of the disease. Methods A retrospective analysis of hospital data RO eight cases, all cases were implemented MSCT scan of enhanced scan, analyze MSCT characteristics of lesions. Results All eight cases were single RO, the average CT value 41HU in CT scan, all its patients had no calcification. Lesion diameter 3.2 cm-6.5 cm, 6 patients （75%） lesions clear edge, the shape, no lobulated sign. 2 cases （25%） lesions edge part is not clear, morphological rules, no lobulated sign. A star or a cord-like scars were seen in 3 cases （37.5%）. Enhanced scanning, RO lesions showed a highly enhanced cortical average CT value of about 115, with an average of about 128 CT value in parenchymal, the average CT value of excretory phase about 105, and strengthen the characteristics of the ＂speed up slow down＂ change, two cases （central scar） was delayed enhancement performance, two cases of cortical lesions enhanced scan and parenchymal ,excretory phase of ＂enhanced reversal＂;Conclusion RO has certain imaging features, MSCT scan Cadogan of enhanced scan can help diagnose the disease.