| 胸腺瘤的MRI表现 |
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| 引用本文： | 张佳,张洪,张振光,曾小敏,严俊,薛凤麟,何波.胸腺瘤的MRI表现[J].中国医学影像技术,2019,35(5):701-705. |
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| 作者姓名： | 张佳 张洪 张振光 曾小敏 严俊 薛凤麟 何波 |
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| 作者单位： | 昆明医科大学第一附属医院影像科, 云南 昆明 650032,昆明医科大学第一附属医院影像科, 云南 昆明 650032,昆明医科大学第一附属医院影像科, 云南 昆明 650032,昆明医科大学第一附属医院影像科, 云南 昆明 650032,昆明医科大学第一附属医院影像科, 云南 昆明 650032,昆明医科大学第一附属医院病理科, 云南 昆明 650032,昆明医科大学第一附属医院影像科, 云南 昆明 650032 |
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| 摘 要： | 目的 分析胸腺瘤的MRI表现。方法 收集经病理证实并有完整影像学资料的29例胸腺瘤患者，分析平扫、DWI及增强扫描MRI表现，并根据病理结果分为低危组（n=18）和高危组（n=11），分析其影像学表现的差异。结果 肿瘤均为单发，28例病灶位于前纵隔，1例位于左锁骨上窝；21例肿瘤形态不规则，21例与邻近结构分界清楚。24例病灶T2WI呈高/稍高信号；20例T1WI呈低—中等信号；9例病变内有囊变坏死，7例可见分隔，1例可见液平；全部病灶DWI呈均匀或混杂信号。9例病灶增强扫描轻度强化，11例中度强化，9例明显强化。低危组与高危组ADC值差异无统计学意义（P=0.42）。结论 胸腺瘤常规MRI及DWI表现有一定特征性，有助于术前诊断胸腺瘤。
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| 关 键 词： | 胸腺瘤 磁共振成像 诊断显像 |
| 收稿时间： | 2018/10/22 0:00:00 |
| 修稿时间： | 2019/3/15 0:00:00 |
MRI manifestations of thymoma |
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| ZHANG Ji,ZHANG Hong,ZHANG Zhenguang,ZENG Xiaomin,YAN Jun,XUE Fenglin and HE Bo.MRI manifestations of thymoma[J].Chinese Journal of Medical Imaging Technology,2019,35(5):701-705. |
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| Authors: | ZHANG Ji ZHANG Hong ZHANG Zhenguang ZENG Xiaomin YAN Jun XUE Fenglin and HE Bo |
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| Institution: | Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China,Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China,Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China,Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China,Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China,Department of Pathology, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China and Department of Medical Imaging, the First Affiliated Hospital of Kunming Medical University, Kunming 650032, China |
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| Abstract: | Objective To analyze MRI manifestations of thymoma. Methods Twenty-nine patients with thymoma confirmed by pathology and complete imaging data were collected. Nonenhance MRI, DWI and enhanced imaging were analyzed. The patients were divided into low-risk group (n=18) and high-risk group (n=11) according to pathology. The differences of imaging manifestations between the two groups were analyzed. Results Totally 28 lesions located in the anterior mediastinum and 1 in the left supraclavicular fossa. The tumors were solitary, 21 were irregular in shape, whereas 21 were clearly demarcated from the adjacent structures. Among them 24 lesions showed high/slightly high signals on T2WI, 20 showed low/medium signals on T1WI. There were 9 cases with cystic necrosis, 7 cases with separator line, and 1 case with liquid level. DWI of all lesions showed uniform or mixed signals. Enhanced images showed 9 lesions mildly enhanced, 11 lesions enhanced moderately, 9 lesions markedly enhanced. There was no significant difference of ADC values between low-risk group and high-risk group (P=0.42). Conclusion Routine MRI and DWI findings of thymoma have some characters, which are helpful to preoperative diagnosis of thymoma. |
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| Keywords: | thymoma magnetic resonance imaging diagnostic imaging |
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