肝血管周上皮细胞瘤的多种影像表现

发布时间：2018-04-17 14:09

  本文选题：肝脏 + 血管周上皮细胞瘤　； 参考：《医学影像学杂志》2017年07期

【摘要】：目的探讨肝血管周上皮细胞瘤(PEComa)的多种影像表现,以提高对该病的诊断水平。方法回顾分析经手术病理证实的11例肝血管周上皮细胞瘤的多种影像表现。结果11例患者均为肝脏单发病灶,10例病灶位于肝右叶,1例位于肝左叶,病灶为圆形或类圆形,最大者直径约13.5cm,最小者直径约1.8cm,平均5.7cm。CT平扫示肝内圆形或类圆形稍低密度影,增强扫描动脉期病灶周边明显强化,门脉期病灶呈向心性不均匀强化,较大病灶内可见分隔,延迟期病灶强化明显减退呈等或稍低密度影。MRI平扫示病灶T1WI呈中等信号或稍低信号,较大病灶信号不均匀,病灶T2WI呈稍高信号,DWI病灶呈高信号,增强特征与CT类似。PET/CT检查所见,直径大于3.0cm病灶均可见放射性摄取异常浓聚或不均匀浓聚,SUV值最大为12.2,最小为3.6,平均值为5.7;直径小于3.0cm病灶表现为放射性摄取轻度浓聚,SUV值最高为4.7,平均为2.9;仅1例直径约1.8cm的病灶表现为无明显放射性浓聚,与正常肝组织放射性摄取相同;延迟1h PET/CT显像示,所有病灶的SUV值均不同程度降低。结论肝血管周上皮细胞瘤PET/CT显像检查具有特征性,与常规影像检查相结合,可以明显提高诊断水平。
[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.
【作者单位】： 中国人民解放军昆明总医院PET-CT中心;
【分类号】：R445.2;R730.44;R735.7
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本文编号：1763920