直肠胃肠道间质瘤的CT及MRI表现并文献复习(附10例病例)  

Rectal Gastrointestinal Stromal Tumors:Imaging Features(Ten Cases)

作　　者：王立环 李澄[2] Wang Li-huan;Li Cheng(Department of Radiology,Taicang Hospital Affiliated to Soochow University,Taicang 215400,Jiangsu Province,China;Department of Radiology,Zhongda Hospital Affiliated to Southeast University,Nanjing 210000,Jiangsu Province,China)

机构地区：[1]苏州大学附属太仓医院放射科,苏州太仓215400 [2]江苏省南京市东南大学附属中大医院放射科,江苏南京210000

出　　处：《中国CT和MRI杂志》2023年第10期149-151,共3页Chinese Journal of CT and MRI

基　　金：2021年苏州市卫生青年骨干人才“全国导师制”培训(Qngg2021039)。

摘　　要：目的探讨发生在直肠的胃肠道间质瘤的CT和MRI影像特点及定位,加强对直肠胃肠间质瘤的认识,避免误诊为其它脏器病变而误导临床治疗。方法回顾性分析2003年12月至2021年10月东南大学附属中大医院经病理证实的10例直肠GIST患者的临床及CT和MRI影像学资料,包括病灶的位置、大小、边界、密度及信号等特点。结果10例患者中其中1例为直肠胃肠道间质瘤复发,9例位于腹膜反折以下,1例位于腹膜反折以上。10例均为外生性表现,其中肿瘤大于10cm者4例;5cm-10cm者3例,小于5cm者3例;大于5cm者均伴有不同程度坏死、囊变或出血,CT、MRI密度及信号不均匀,增强扫描呈不均匀强化。多平面M RI显示肿瘤与直肠肌层分界不清。结论直肠胃肠道间质瘤的CT及MRI表现具有一定特征。CT和MRI对病灶的生长方式,对周围组织关系及侵犯有一定的诊断价值,对临床治疗方案的选择具有重要指导意义。Objective To investigate the CT and MRI features and localization of Rectal gastrointestinal stromal tumor,strengthen the understanding of rectal gastrointestinal stromal tumor,avoid being misdiagnosed as other organ diseases and misleading clinical treatment.Methods Retrospective analysis the clinical,CT and MRI data of 10 patients with rectal gist confirmed by pathology from December 2003 to October 2021,including the location,size,boundary,density and signal characteristics of the lesions.Results among the 10 patients,1 case was recurrent rectal gastrointestinal stromal tumor,9 cases were located below the peritoneal fold,and 1 case was located above the peritoneal fold.All the 10 cases were exogenic,of which 4 cases had tumors larger than 10cm;3 cases were 5cm-10cm and 3 cases were less than 5cm;Patients larger than 5cm were accompanied with necrosis,cystic change or appearance in different degrees.The density and signal of CT and MRI were not uniform,and the enhancement scan showed uneven enhancement.Multiplanar MRI showed that the boundary between tumor and rectum muscle layer was unclear.Conclusion CT and MRI findings of rectal gastrointestinal stromal tumors have certain characteristics.CT and MRI have certain diagnostic value for the growth mode of the lesion,the relationship between the surrounding tissues and the invasion,and have important guiding significance for the selection of clinical treatment.

关 键 词：直肠胃肠道间质瘤 断层计算机成像 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]