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目的:探讨胃肠道间质瘤(GIST)的CT表现、诊断及其价值。方法:回顾性分析我院34例经病理及免疫组织化学证实的GIST的影像学资料,全部病例均行CT检查,其中28例注射静脉对比剂后行增强扫描;5例胃双重造影及全消化道钡餐;7例内镜检查;19例超声检查。结果:本组34例病例中67.6%(23/34)经诊断为恶性,29.4%(10/34)为良性,2.9%(1/34)诊断为交界性。CT主要表现为:88.2%(30/34)为实性肿块,其中26.6%(8/30)为均匀密度,73.3%(22/30)为不均匀密度;11.8%(4/30)为囊性肿块,直径3-20cm,其中50%(2/4)可见坏死液化灶;34例肿块中55.9%(19/34)与邻近结构有明显的粘连或直接侵犯周围组织,其中10.5%(2/19)肿块边缘可见条带状钙化;增强扫描病灶呈不均与明显强化。本组病例肝转移5.9%(2/34),腹膜转移2.9%(1/34),膀胱转移2.9%(1/34)。结论:CT检查可定位诊断,并有助于定性诊断。
Objective: To investigate the CT findings, diagnosis and its value of gastrointestinal stromal tumors (GIST). Methods: The imaging data of 34 cases of GIST confirmed by histopathology and immunohistochemistry were retrospectively analyzed. All the cases were examined by CT. Among them, 28 cases were injected intravenously with contrast-enhanced scanning and 5 cases with double contrast and total digestion Barium meal; 7 cases of endoscopy; 19 cases of ultrasound. Results: Of the 34 cases, 67.6% (23/34) were diagnosed as malignant, 29.4% (10/34) were benign and 2.9% (1/34) were diagnosed as borderline. CT mainly showed as follows: 88.2% (30/34) were solid mass, of which 26.6% (8/30) were uniform density, 73.3% (22/30) were inhomogeneous density, 11.8% (4/30) Of the 34 tumors, 55.9% (19/34) had obvious adhesions with adjacent structures or directly infiltrated the surrounding tissues, of which 10.5% (2) / 19) visible band edge of the calcification; enhanced scanning lesions were uneven and significantly enhanced. The liver metastases in this group 5.9% (2/34), peritoneal metastasis 2.9% (1/34), bladder metastasis 2.9% (1/34). Conclusion: CT examination can locate the diagnosis, and contribute to the qualitative diagnosis.