本文選題：肝臟 + 血管周上皮細胞瘤　； 參考：《醫(yī)學影像學雜志》2017年07期

【摘要】：目的探討肝血管周上皮細胞瘤(PEComa)的多種影像表現(xiàn),以提高對該病的診斷水平。方法回顧分析經(jīng)手術病理證實的11例肝血管周上皮細胞瘤的多種影像表現(xiàn)。結(jié)果11例患者均為肝臟單發(fā)病灶,10例病灶位于肝右葉,1例位于肝左葉,病灶為圓形或類圓形,最大者直徑約13.5cm,最小者直徑約1.8cm,平均5.7cm。CT平掃示肝內(nèi)圓形或類圓形稍低密度影,增強掃描動脈期病灶周邊明顯強化,門脈期病灶呈向心性不均勻強化,較大病灶內(nèi)可見分隔,延遲期病灶強化明顯減退呈等或稍低密度影。MRI平掃示病灶T1WI呈中等信號或稍低信號,較大病灶信號不均勻,病灶T2WI呈稍高信號,DWI病灶呈高信號,增強特征與CT類似。PET/CT檢查所見,直徑大于3.0cm病灶均可見放射性攝取異常濃聚或不均勻濃聚,SUV值最大為12.2,最小為3.6,平均值為5.7;直徑小于3.0cm病灶表現(xiàn)為放射性攝取輕度濃聚,SUV值最高為4.7,平均為2.9;僅1例直徑約1.8cm的病灶表現(xiàn)為無明顯放射性濃聚,與正常肝組織放射性攝取相同;延遲1h PET/CT顯像示,所有病灶的SUV值均不同程度降低。結(jié)論肝血管周上皮細胞瘤PET/CT顯像檢查具有特征性,與常規(guī)影像檢查相結(jié)合,可以明顯提高診斷水平。
[Abstract]:Objective to investigate the various imaging features of hepatic perivascular epithelial cell tumor (PEComa) in order to improve the diagnostic level of the disease.Methods the imaging findings of 11 cases of hepatic hemangiopericytoma confirmed by operation and pathology were retrospectively analyzed.Results all the 11 patients were single hepatic lesions. 10 cases were located in the right lobe of liver. One case was located in the right lobe of liver. The lesion was round or round, the largest was about 13.5 cm, the smallest was about 1.8 cm. The mean 5.7cm.CT plain scan showed that the liver was round or round and slightly low-density.The peripheral enhancement was obvious in arterial phase of contrast enhancement, the focus in portal phase was concentric and uneven enhancement, and the larger lesions could be separated.In the delayed phase, the enhancement of the lesions decreased significantly to equal or slightly low density shadow. MRI plain scan showed that the lesions showed moderate or slightly low signal intensity in T1WI, the signal intensity was not homogeneous in the larger lesions, and the T2WI showed a slightly higher signal intensity in the lesions. The enhancement features were similar to those of CT. PET / CT findings.All lesions with diameter larger than 3.0cm showed abnormal concentration or uneven concentration of radioactive uptake, the maximum value was 12.2, the smallest was 3.6, the mean value was 5.7, the mean value of the lesion smaller than that of 3.0cm was 4.7m, the average value was only 2.9.The diameter of the lesion was smaller than that of 3.0cm.The lesions of 1 case with a diameter of about 1.8cm showed no significant concentration of radioactivity.The radioactivity uptake of all lesions was the same as that of normal liver tissues, and 1 hour delayed PET/CT imaging showed that the SUV values of all lesions were decreased in varying degrees.Conclusion the PET/CT imaging of hepatic perivascular epithelioma is characteristic and can improve the diagnostic level in combination with conventional imaging.
【作者單位】： 中國人民解放軍昆明總醫(yī)院PET-CT中心;
【分類號】：R445.2;R730.44;R735.7
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本文編號：1763920