胃肠道间质瘤的影像诊断价值

目的：探讨胃肠道间质瘤（GIST）的影像学特点及诊断价值。方法：回顾分析53例经手术和病理证实的GIST患者影像及临床资料。结果：病灶分布于食管1例，胃29例，小肠16例，大肠5例，胃肠道外2例。病理分型：良性GIST14例，交界性10例，恶性26例，未确定3例：临床表现为消化道出血占38％（20／53），腹部不适及腹痛占36％（19／53）。主要影像学表现为黏膜下富含血供的肿块，境界清晰光整，外生性为主，肿块内出血、坏死、囊性变明显，局部淋巴结无转移？结论：GIST患者的影像学表现有一定的特征性，对准确定位、良恶性的判断、指导临床治疗和估计预后有重要价值。

Imaging diagnostic value in gastrointestinal stromal tumors

Objective:To investigate the imaging features of gastrointestinal stromal tumors(GIST) and its diagnostic value. Methods:The clinical and imaging data of 53 patients with GIST proved by operation and pathology were analyzed. Results:Tumors located in esophagus in 1 cases,stomach in 29 cases,small bowel in 16 cases,colorectum in 5 cases and extra gastrointestinal sites in 2 cases.Immunohistochemical study diagnosed the GISTs as benign in 14 cases,intermediate in 10 cases and malignant in 26 cases.The common symptoms were gastrointestinal tract bleeding(20/53),vague abdominal discomfort and abdominal pain(19/53).The main imaging appearances included submucous hypervascular lesions with well-defined margins,predominating exophytic growth,obvious hemorrhage or necrosis and cystic changes within the mass and no metastases to local lymph nodes. Conclusion:The imaging of GIST manifests some characteristics.It is valuable in localizing precisely,discriminating benign or malignantin,guiding clinical therapy and estimating prognosis for GIST.