【摘要】：目的探討腎臟外周型原始神經(jīng)外胚層腫瘤(peripheral primitive neuroectodermal tumor,p PNET)的影像學(xué)表現(xiàn)及診斷特征。方法回顧分析4例經(jīng)術(shù)后病理證實的發(fā)生于腎臟的p PNET的臨床表現(xiàn)、超聲征象、CT征象及其病理表現(xiàn)。結(jié)果腫瘤聲像圖均表現(xiàn)為混合回聲團塊,伴有不規(guī)則無回聲區(qū),大部分瘤內(nèi)可探及血流信號,阻力指數(shù)(RI)不高;CT圖像腫瘤均表現(xiàn)為體積較大的、有包膜的囊實性軟組織腫塊,內(nèi)部可見分隔,可有少量出血及鈣化,增強掃描,動脈期病變實性成分輕度強化,靜脈期及排泌期輕度延遲強化,其中液性成分始終無強化,分隔輕度強化。腎靜脈或下腔靜脈內(nèi)可見大小不等栓子。結(jié)論腎臟外周型原始神經(jīng)外胚層腫瘤超聲檢查無明顯特征性表現(xiàn),而CT表現(xiàn)有一定的特征性,能較好的顯示腫瘤的內(nèi)部結(jié)構(gòu)、明確腫瘤的范圍及有無遠處轉(zhuǎn)移,對手術(shù)的制定及治療效果的評價有重要的參考價值。
[Abstract]:Objective to investigate the imaging features and diagnostic features of peripheral primitive neuroectodermal tumors (peripheral primitive neuroectodermal tumor,p PNET) of the kidney. Methods the clinical manifestations, CT findings and pathological findings of 4 cases of p PNET confirmed pathologically in kidney were retrospectively analyzed. Results all the tumors showed mixed echo mass with irregular non-echoic area. The blood flow signals could be detected in most tumors. The tumors on CT images with low resistive index (RI) showed large cystic and solid soft tissue masses with capsule. There were a few bleeding and calcification, enhanced scanning, slight enhancement of solid components in arterial phase, slight delayed enhancement in venous phase and excretion stage, in which liquid components were not enhanced and septal enhancement was slight. The renal vein or inferior vena cava can be seen in variously sized emboli. Conclusion Ultrasonic examination of peripheral primitive neuroectodermal tumors of kidney has no obvious characteristic, but CT has some characteristics, which can better display the internal structure of the tumor, determine the range of the tumor and whether there is distant metastasis. It has important reference value for the establishment of operation and the evaluation of therapeutic effect.
【作者單位】： 山東省巨野縣人民醫(yī)院放射科;南京醫(yī)科大學(xué)第一附屬醫(yī)院放射科;
【分類號】：R737.11;R730.44

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