CT与MRI诊断胃肠道外间质瘤的临床分析  

The clinical analysisi of CT and MRI diagnosis about extragastroin testinal stuomn tumor

作　　者：彭志远[1] 阳明[1] 施崇敏[1] 杨敏[1] 

机构地区：[1]四川省泸州市人民医院放射科,四川泸州646000

出　　处：《医学影像学杂志》2012年第9期1496-1499,共4页Journal of Medical Imaging

摘　　要：目的分析胃肠道外间质瘤(EGIST)的影像表现,以提高对该病的影像诊断水平。方法回顾性分析经手术、病理证实的10例胃肠道外间质瘤的影像学资料。结果 10例中,高度侵袭危险性7例,中度侵袭危险性1例,低度侵袭危险性2例。肿瘤位于小肠系膜3例,回盲部肠系膜2例,大网膜1例,腹膜后1例,骶前间隙1例,直肠前间隙1例,多发1例,10例中共计12个肿块。肿瘤最大径3.8～25cm,平均11.3cm。肿块呈分叶状5个、不规则形4个、类圆形3个。CT平扫9个病灶密度不均匀,1个密度较均匀;MRI平扫2个信号不均匀;囊变和坏死发生率80%。CT或MRI增强11个肿块明显不均匀强化,1个中度较均匀强化。结论胃肠道外间质瘤的影像学表现有相对的特征性,通过病变的影像特点和结合临床资料综合分析,可提高其诊断准确性,能够为临床提供重要的诊断依据。Objective To anayze the imaging findings of extra-gastrointestinal stroma tumor （EGIST）, so as to improve the imaging diagnosis level of this disease. Methods We retrospectively analyzed the imaging data of 10 cases of EGIST, which were confirmed by operation and pathology. Results In the 10 cases, 7 cases have highly invasion risk, 1 case have moderate invasion risk, 2 cases have low invasion risk. The tumor is located at the small bowel mesentery in 3 cases, the ileocecus mesentery in 2 cases, the greater omentum in 1 case, the retroperitoneal space in 1 case, the presacral space in 1 case, the prerectal space in I case. 1 case has multiple lesion, 10 cases have a total of 12 masses. The biggest diameter oF tumor is 3.8 cm to 25 cm, with an average of 11.3 cm. The mass is lobulated in 5 cases, irregular shape in 4 cases, round in 3 cases. In CT plain scanning, the density is not homogeneous in 9 lesions, homogeneous in 1 lesion; In MRI plain scanning, the signal is not uniform in 2 lesions; The rate of cystic change and necrosis is 80 %. In CT or MRI enhancement scanning, 11 masses are obviously uneven strengthened, I mass is moderate more homogeneous strengthened. Conclusion The imaging findings of EGIST have relative characteristic, and comprehensively analysing the imaging characteristic and clinical data of the lesion can improve the diagnosis accuracy and provide important diagnosis evidence for clinic.

关 键 词：胃肠道外间质瘤 体层摄影术 X线计算机 磁共振成像 

分 类 号：R735[医药卫生—肿瘤] R814.42[医药卫生—临床医学]