Diagnostic value of MRI for mediastinal neurogenic tumors
LIU Wen-fei1, JIN Hang2, WU Jian-lin1, YU Jing1
1. Department of Medical Imaging, Affiliated Zhongshan Hospital of Dalian University, Dalian Liaoning 116001, China;
2. Department of Radiology, Affiliated Zhongshan Hospital of Fudan University, Shanghai 200000, China
Abstract：Objective: To analyze the characteristics of MRI scan signal for mediastinal neurogenic tumors in order to enhance the understanding and diagnostic accuracy of the disease. Methods: There were 33 cases which were pathologically identified as mediastinal neurogenic tumors. Spin echo T1WI, fast spin echo T2WI, breath spoiled gradient echo T1WI MRI were used and retrospectively analyzed. Results: Among the 33 cases of mediastinal neurogenic tumor, there were 18 cases of neurilemmoma, ganglioneuroma in 7 cases, neurofibroma in 5 cases and 3 cases of paraganglioma. The boundary of the tumors was clear, mostly were round or oval. Through MRI scan, T1WI showed homogeneously low signal; T2WI showed slightly higher signal; the rest of the neurogenic tumors showed inhomogeneously high signal. Through dynamic enhanced scan, 10 cases of neurilemmoma were inhomogeneous slight enhancement in arterial phase and showed inhomogeneous delayed enhancement obviously in venous phase. Three cases of neurilemmoma were inhomogeneous enhancement obviously in arterial phase and showed continuous enhancement obviously in venous phase. Neurofibroma was homogeneous slight enhancement in arterial phase and showed even delayed enhancement obviously in venous phase. Ganglioneuroma showed slight and moderate homogeneous delayed enhancement. Paraganglioma showed inhomogeneous enhancement obviously in arterial phase and low enhancement in venous phase. Conclusion: MRI symptoms of mediastinal neurogenic tumors have some specific characteristics, which could be helpful for the correct diagnosis before operation.
刘文飞1，金 航2，伍建林1，于 晶1. 纵隔神经源性肿瘤MRI的诊断价值[J]. 中国临床医学影像杂志, 2017, 28(2): 101-104.
LIU Wen-fei1, JIN Hang2, WU Jian-lin1, YU Jing1. Diagnostic value of MRI for mediastinal neurogenic tumors. JOURNAL OF CHINA MEDICAL IMAGING, 2017, 28(2): 101-104.
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