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中华临床医师杂志(电子版) ›› 2019, Vol. 13 ›› Issue (04) : 259 -265. doi: 10.3877/cma.j.issn.1674-0785.2019.04.004

所属专题: 文献

临床研究

18F-FDG PET/CT在鉴别胸腺上皮肿瘤组织学分型中的应用
姜丽姣1, 陈春雨1, 关湘萍2, 于晶1, 徐婷婷2, 高俊田1,(), 李囡2,()   
  1. 1. 136100 吉林公主岭,吉林国文医院核医学科
    2. 100142 北京,北京大学肿瘤医院核医学科
  • 收稿日期:2019-01-02 出版日期:2019-02-15
  • 通信作者: 高俊田, 李囡

Value of 18F-FDG PET/CT in WHO classification of thymic epithelial neoplasms

Lijiao Jiang1, Chunyu Chen1, Xiangping Guan2, Jing Yu1, Tingting Xu2, Juntian Gao1,(), Nan Li2,()   

  1. 1. Department of Nuclear Medicine, Jilin Guowen Hospital, Gongzhuling 136100, China
    2. Department of Nuclear Medicine, Peking University Cancer Hospital, Beijing 100142, China
  • Received:2019-01-02 Published:2019-02-15
  • Corresponding author: Juntian Gao, Nan Li
  • About author:
    Corresponding author: Gao Juntian, Email: ;
    Li Nan, Email:
引用本文:

姜丽姣, 陈春雨, 关湘萍, 于晶, 徐婷婷, 高俊田, 李囡. 18F-FDG PET/CT在鉴别胸腺上皮肿瘤组织学分型中的应用[J]. 中华临床医师杂志(电子版), 2019, 13(04): 259-265.

Lijiao Jiang, Chunyu Chen, Xiangping Guan, Jing Yu, Tingting Xu, Juntian Gao, Nan Li. Value of 18F-FDG PET/CT in WHO classification of thymic epithelial neoplasms[J]. Chinese Journal of Clinicians(Electronic Edition), 2019, 13(04): 259-265.

目的

研究2-氟-18-氟-2-脱氧-D-葡萄糖(18F-FDG)PET/CT影像表现在鉴别胸腺上皮肿瘤组织学分型中的作用。

方法

选取2011年1月1日至2018年6月30日北京大学肿瘤医院48例经穿刺活检或肿瘤切除术后病理证实为上皮性胸腺肿瘤的初诊患者作为研究对象,回顾性分析患者全身18F-FDGPET/CT图像资料,采用双变量相关性分析、t检验和受试者工作特征(ROC)曲线分析法,比较患者临床病理特征、CT特点和代谢情况的差异。

结果

48例患者低危胸腺瘤组17例、高危胸腺瘤组8例、胸腺癌组23例,淋巴结转移12例,胸膜转移4例,肺转移3例,肝、心包、骨转移各2例。3组患者有无包膜(r=0.921,P<0.001),有无中纵隔(r=0.452,P=0.001)或周围侵犯(r=0.865,P=0.000),有无淋巴结转移(r=0.505,P<0.001)或远处脏器转移(r=0.383,P=0.008)、SUVmax值(t=0.626,P<0.001)、SUVmax/病变最大径值(t=0.645,P<0.001)等方面比较,差异均具有统计学意义。ROC曲线分析示区分低危组与高危或胸腺癌组准确性较高的指标分别为病变周围侵犯情况、SUVmax/病变最大径和SUVmax,ROC曲线下面积分别为0.952、0.916和0.865。

结论

18F-FDG PET/CT可用于鉴别胸腺上皮肿瘤组织学分型,可有效区分低危组胸腺瘤与高危组胸腺瘤或胸腺癌。

Objective

To assess the value of 18F-FDG PET/CT imaging in the differential WHO classification of thymic epithelial neoplasms.

Methods

From February 1, 2011 to June 30, 2018, 48 patients with pre-therapy thymic epithelial neoplasms confirmed by surgery or biopsy at Peking University Cancer Hospital were included and divided into three groups: low-risk thymomas, high-risk thymomas, and thymic carcinomas. Bivariate correlation analysis, Student's t test, and ROC curve analysis were used to analyze and compare the clinicopathologic features, features of CT imaging, and FDG metabolism parameters among the three groups of thymic epithelial neoplasms.

Results

Of 48 cases of thymic epithelial neoplasms, 17 were low-risk thymomas, 8 were high-risk thymomas, 23 were thymic carcinomas, 12 had lymph node metastasis, 4 had pleural metastasis, 3 had pulmonary metastasis, and 2 had liver/pericardium/bone metastasis. Tumor capsule (r=0.921, P<0.001), mediastinal invasion (r=0.452, P=0.001), neighboring structure invasion (r=0.865, P<0.001), lymph node metastasis (r=0.505, P<0.001), distant organ metastasis (r=0.383, P=0.008), SUVmax (t=0.626, P<0.001), and SUVmax/maximum tumor diameter ratio (t=0.645, P<0.001) were significantly different among the three groups (P<0.01). Neighboring structure invasion, SUVmax/maximum tumor diameter ratio, and SUVmax were found to be most useful predictive factors to distinguish low-risk thymomas from high-risk thymomas or thymic carcinomas (areas under the ROC curves were 0.952, 0.916, and 0.865, respectively).

Conclusion

18F-FDG PET/CT can be used to identify different WHO classifications of thymic epithelial neoplasms, and can effectively distinguish low-risk thymomas from high-risk group thymomas or thymic carcinomas.

表1 不同恶性程度胸腺瘤临床病理特征及CT征象的差异比较(例)
表2 不同恶性程度胸腺瘤CT参数及PET代谢参数的差异比较(±s
图1 AB型胸腺瘤患者影像学图像 患者男性,42岁,体检发现前纵隔占位,18FDG-PET/CT图像示:前纵隔软组织结节(红箭头所示),边缘尚光滑,与邻近结构分界清晰,大小约3.6 cm×2.3 cm×2.1 cm,SUVmax为2.5
图2 胸腺鳞状细胞癌患者影像学检查图像 女性,59岁,因胸痛就诊,18FDG-PET/CT图像示:前纵隔不规则软组织影(红箭头所示),边缘不规则,病变侵入中纵隔,与心包及头臂静脉分界不清,病变较大截面约4.5 cm×3.2 cm×2.8 cm,SUVmax为7.5,癌侵及肿物周围纤维脂肪组织及肺组织,可见脉管癌栓,免疫组化:CAM5.2(+),CK(+),CK19(+),CK7(+),EMA(+),Ki67(+80%),Vimentin(-),CD117(+),CD5(弱+),CD56(-),CgA(-),Syn(-)
表3 不同指标区分胸腺瘤恶性程度的诊断准确性
图3 不同指标判断胸腺瘤恶性程度准确性的受试者工作特征曲线
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