学术论文

      直肠间质瘤MRI表现及与病变危险度的对照研究

      Comparative study among MRI features and risk stratification in rectal stromal tumor

      摘要:
      目的:总结直肠间质瘤MRI表现,探讨其对病变危险度的评估价值.资料与方法:回顾性分析2012年1月-2016年4月收治的经手术及病理证实的18例直肠间质瘤患者MRI表现,对肿瘤危险度分级进行对照分析.结果:病理分型:高危占72%(13/18),中危占22%(4/18),低危占6%(1/18).2位影像医师独立对本组MRI表现进行分级.肿瘤的大小、边界及信号均匀性方面差异与危险度分级有显著统计学意义(P<0.05),肿瘤的生长方式及形态方面差异与危险度分级无统计学意义(P>0.05).结论:直肠间质瘤的MRI表现具有一定的特征性,对于直肠间质瘤的定性诊断、危险度分级及鉴别诊断具有显著诊断价值.
      Abstract:
      Objective:To summarize MRI features and investigate the relationship between MRI manifestations and risk stratification in rectal stromal tumor.Methods:Appearances of MRI in 18 cases of rectal gastrointestinal stromal tumors diagnosed by surgery and pathology between 2012 and 2016 were analyzed retrospectively,assessing tumor risk stratification.Results:Pathological classification was as following:among them,72%(13/18) were high-risk,22%(4/18) were intermediated-risk,6%(1/18) were low-risk.MRI findings were graded for rectal stromal tumors by two radiologists.There was a significant correlation between certain MRI features(tumor size,boundary and uniformity of signal) and tumor risk stratification(P<0.05).However,tumor growth pattern and morphous were found to have no statistical significance for high-risk malignant rectal stromal tumor.Conclusion:Rectal stromal tumor has some specific MRI findings which could have important significances for qualitative diagnosis,assessing tumor risk stratification and differential diagnosis.
      作者: 孙超 [1] 刘筠 [2] 李鹏 [2] 许亮 [2]
      Author: SUN Chao [1] LIU Jun [2] LI Peng [2] XU Liang [2]
      作者单位: 南开大学研究生院,天津,300071 天津市人民医院影像学部,天津,300121
      刊 名: 中国临床医学影像杂志 ISTICPKU
      年,卷(期): 2017, 28(3)
      分类号: R735.37 R445.1
      在线出版日期: 2017年4月12日