27例胃肠道间质瘤的影像学分析

Imaging diagnosis of gastrointestinal stromal tumors: a report of 27 cases

目的:探讨胃肠道间质瘤的影像学表现。材料与方法:27例胃肠道间质瘤,其中17例行超声检查,7例行MSCT检查,包括常规检查及增强检查,5例行X线数字胃肠,1例行MRI检查。27例同时进行手术切除和病理检查。结果:本组27例胃肠道间质瘤,发生在食道1例(3.7%),胃8例(29.6%),其中1例合并食道小平滑肌瘤,1例合并肝脏转移瘤;小肠16例(59.2%),其中1例合并肝转移瘤,1例合并腹壁转移;直肠2例(7.4%)。发生在胃和小肠共24例(88.9%)。所有的病例都进行免疫组化CD117和CD34检查。并对胃肠道间质瘤的影像学特征进行讨论。结论:通过对胃肠道间质瘤的影像学和免疫组化特征的讨论,提高对其的认识和诊断水平。

Objective: To investigate the value of imaging diagnosis of gastrointestinal stromal tumors. Materials and Methods: Twenty-seven cases of gastrointestinal stromal tumors(GISTs) were included in the study. Ultrasonography was performed in 17 cases, MSCT,both conventional and contrast examination,were performed in 8 cases, 5 cases had digital X-ray GI examination and one case had conventional and contrast enhanced MRI study. All the 27 cases had surgical resection of the tumor and proved by histopathologic examination. Results: In this study the tumor occurred in esophagus in one case(3.7%), stomach in 8 cases (29.6%), among which one case was associated with small esophageal leiomyoma, and one case had liver metastases, in 16 cases tumor occurred in small intestine(59.2%), among which one case had liver metastases, and one case had abdominal wall involvement, in 2 cases the tumor occurred in rectum(7.4%). Tumor occurred in stomach and small intestine in 24 cases(88.9%). All cases showed positive immuno-histochemistry study, CD117 and CD34. The imaging features of the tumor in each imaging modality were discussed. Conclusion: With the increasing knowledge of the GISTs in mind, using imaging diagnosis together with immuno-histochemistry study the diagnosis of this tumor can be improved obviously.