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作者对35个肾癌进行磁共振成像(MRI)与病理大切片对照观察,着重研究高场(1.0T)MRI肾癌假包膜征的表现特点及其病理基础。结果显示:高场MRI肾癌假包膜征主要表现为T_2加权像上肿瘤内侧缘弧形低信号,显示率为62.9%;假包膜征的病理基础为癌周结构[由纤维包膜和(或)受压致密肾实质组成],且当其厚度大于0.62mm时,MRI方能显示。此外,对假包膜征评估肾癌组织学分级的应用价值进行了探讨。
The author of MRI on 35 renal cell carcinoma and pathological large section control observation, focusing on the high field (1.0T) MRI manifestations of renal cell carcinoma pseudocapsy characteristics and pathological basis. The results showed that the pseudomembranous sign of high-field MRI renal cell carcinoma mainly showed low arc signal of tumor medial edge on T 2 -weighted image, with a rate of 62.9%. The pathological basis of pseudocapsule was the pericancerous structure Membranous and / or compressed compact renal parenchyma], and when its thickness is greater than 0.62 mm, MRI can show. In addition, the application value of pseudocapsules in assessing histological grading of renal cell carcinoma was discussed.