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自身免疫性胰腺炎患者的腹部影像学改变

梁亮 陆秀良 顾君英 陈刚 饶圣祥 纪元 曾蒙苏

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自身免疫性胰腺炎患者的腹部影像学改变

详细信息
  • 中图分类号: R576;R816.5

Imaging characteristics of abdominal organs in autoimmune pancreatitis

  • 摘要: 目的研究自身免疫性胰腺炎(AIP)患者腹部的影像学改变。方法回顾性研究25例经病理证实或肾上腺皮质激素规范治疗后随访证实的AIP患者临床资料,21例行CT检查,14例行MRI检查,其中10例同时行CT及MRI检查。结果胰腺弥漫肿大者16例(64.0%),局限肿块型7例(28.0%),混合型2例(8.0%)。CT平扫病变呈等密度13例(61.9%),稍低密度8例(39.1%),1例胰腺内及周边见多个囊性低密度灶,MRI检查病变T1WI序列信号均匀或稍不均匀降低,T2WI序列信号不同程度均匀或稍不均匀升高,23例(92.0%)DWI序列信号升高。动态增强扫描时,胰腺病变处呈"雪花状"不均匀渐进性延迟强化。18例(72.0%)病变周围见包壳样结构。7例(28.0%)胰管形态不规则,5例(20.0%)胰管轻度扩张。17例(68.0%)胆道系统受累;4例(16.0%)肾脏受累;4例(16.0%)见腹膜后纤维化。1例(4.0%)肝门区见肿大淋巴结。结论 AIP患者胰腺及其他腹部器官具有特征性的影像学改变,对其诊断和鉴别诊断具有重要意义。

     

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