| 丁重阳,李天女.前纵隔肿瘤18F-FDG PET/CT显像特征[J].中国医学影像技术,2014,30(4):531~534 |
| 前纵隔肿瘤18F-FDG PET/CT显像特征 |
| Features of anterior mediastinal tumors in 18F-FDG PET/CT imaging |
| 投稿时间：2014-01-13 修订日期：2014-02-18 |
| DOI： |
| 中文关键词: 纵隔肿瘤 正电子发射型体层摄影术 18F 氟脱氧葡萄糖 |
| 英文关键词:Mediastinal neoplasms Positron-emission tomography Fluorodeoxyglucose F18 |
| 基金项目:南京市科技计划项目（201303038）。 |
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| 中文摘要: |
| 目的 观察前纵隔肿瘤18F-FDG PET/CT显像特征。方法 回顾性分析28例经病理证实的前纵隔肿瘤患者的18F-FDG PET/CT资料。28例中，侵袭性胸腺瘤6例，胸腺癌8例，淋巴瘤12例，精原细胞瘤2例。观察不同肿瘤18F-FDG PET/CT显像特征，测量肿瘤最大径及最大标准摄取值（SUVmax），比较侵袭性胸腺瘤、胸腺癌及淋巴瘤患者肿瘤最大径及SUVmax差异。结果 侵袭性胸腺瘤、胸腺癌及精原细胞瘤18F-FDG PET/CT见前纵隔内形态不规则、密度不均匀软组织肿物。淋巴瘤18F-FDG PET/CT见前纵隔内多个结节融合成团块状肿物，密度均匀。侵袭性胸腺瘤、胸腺癌和淋巴瘤间肿瘤最大径差异无统计学意义（P=0.746）；胸腺癌和淋巴瘤SUVmax（11.54±3.79、14.11±4.34）高于侵袭性胸腺瘤（4.87±0.38），差异均有统计学意义（P=0.003、0.001），胸腺癌与淋巴瘤SUVmax差异无统计学意义（P=0.189）。结论 前纵隔肿瘤的18F-FDG PET/CT表现具有一定特征，有助于临床诊断。 |
| 英文摘要: |
| Objective To observe the features of anterior mediastinal tumors in 18F-FDG PET/CT imaging. Methods Data of 18F-FDG PET/CT scanning for 28 patients, including 6 of invasive thymoma, 8 of thymic carcinoma, 12 of lymphoma and 2 of seminoma confirmed by pathology were retrospectively analyzed. The features of 18F-FDG PET/CT were observed, then the maximum diameter and 18F-FDG uptake of all the tumors were measured and compared among invasive thymoma, thymic carcinoma and lymphoma. Results 18F-FDG PET/CT of invasive thymoma, thymic carcinoma and seminoma showed irregular tumors with heterogeneous density. 18F-FDG PET/CT of lymphoma showed crumb tumors mixed by several nodes with homogeneous density. There was no difference of maximum diameter of tumor among invasive thymoma, thymic carcinoma and lymphoma (P=0.746). The maximun of standardized uptake value (SUVmax) of thymic carcinoma (11.54±3.79) and lymphoma (14.11±4.34) were higher than that of invasive thymoma (4.87±0.38, P=0.003, 0.001), while no difference was found between thymic carcinoma and lymphoma (P=0.189). Conclusion 18F-FDG PET/CT features of anterior mediastinal tumors have certain characteristics, which are helpful to clinical diagnosis. |
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