胃肠道间质瘤的CT和MRI诊断价值(附16例分析)

目的:评价CT和MRI诊断胃肠道间质瘤的价值。方法:回顾性分析经手术和病理证实的16例胃肠道间质瘤患者的资料。结果:16例肿瘤均为单发,位于胃部9例,空肠3例,回肠、食管、直肠及后腹膜各1例。良性2例,潜在恶性4例,恶性10例。CT和MRI表现:粘膜下富血供性肿块,肿瘤倾向于腔外生长,可有囊变、坏死、出血、钙化。增强后良性者强化均匀,边界清楚,恶性者强化不均匀,可有邻近结构侵犯。结论:CT和MRI对胃肠道间质瘤的定位和定性判断,以及鉴别诊断有重要价值。

The value of CT and MRI in diagnosing gastrointestinal stromal tumors (analysis of 16 cases)

Objective:To investigate the value of CT and MRI in diagnosing gastrointestinal stromal tumors(GIST).Methods:We analysed sixteen patients with surgically and pathologically proved GIST.Results:All 16 cases originated single,9 were located in stomach,3 in jejunum,1 in ileum,1 in esophagus,1 in rectum and 1 in posterior peritoneum.Of the 16 cases with GIST,5 were benign,4 were potential malignant and 7 were malignant.The imaging appearance of CT and MRI included submucous hypervascular lesions with predominating exophytic growth.There were obvious hemorrhage,necrosis,cystic changes or calcification within the mass.On enhanced CT and MRI scans,there were enhancement in all cases.Marked isoenhancement and well-defined margins were seen in benign lesions and heterogeneous enhancement in malignant ones.Conclusion:CT combined with MRI can precisely localized GIST and is helpful in differentiating benign with magligant GIST.The imaging of CT and MRI has important value in differential diagnosis.