摘要
目的:探讨胃间质瘤的CT表现及其与病变恶性程度的相关性。方法:回顾性分析56例经手术病理证实为胃间质瘤的CT表现特点,并将其与病变的恶性程度做对照分析。结果:高度恶性的GSTs多为直径超过5 cm的边界不清的不规则肿块,增强扫描图像上呈不均匀强化,且病变内部可见明显囊变坏死改变,而低度恶性的GSTs则多表现为5 cm以下的边界清楚的圆形或椭圆形肿块,增强后均匀强化,以上改变在两者中均有统计学意义。而肿瘤是否伴有钙化及表面是否出现溃疡在二者无明显统计学差异(P值分别为0.193和0.265)。75%的低度恶性病变和7.1%的高度恶性病变表现为胃腔内生长方式,二者有明显统计学差异(χ2=26.635,P=0.000)。结论:GSTs的恶性程度与CT增强表现中病变的大小、形态、中心坏死程度、强化特征、边界清晰与否及生长方式有关,可有助于提高对GISTs的诊断准确率,并进一步为其恶性程度的评估提供重要依据。
Objective：To discuss the CT features of gastric stromal tumors（GSTs） and their correlation with the degree of malignancy.Methods：The CT features and pathologic characteristics of 56 patients with histology-proven GSTs were analyzed retrospectively.Results：The high degree malignancies were mostly ill-defined and 5cm in diameter,with necrotic and liquefied areas within the tumor.Heterogeneous enhancement could be found after injection of contrast.The low degree malignancies were usually 5cm in diameter with well-defined margin and homogeneous in density.Homogeneous enhancement was showed after contrast media administration.There was a significant correlation between malignancy degree and mass size,central necorosis,enhancement feature and tumour margins.There was no significant correlation between malignancy degree and the occurrence of ulcer/calcification in lesion.Seventy-five percent of the low degree malignancy and 7.1% of the high degree malignancy were intra-luminal masses with a significant statistical difference（χ~2=26.635,P=0.000）.Conclusion：The correlaitons between malignancy degree and mass size,central necorosis,enhancement feature,tumour margin and tumor growth pattern were significant.CT can provide important information in the assessment of the degree of malignancy and help to individualized treatment planning for patients.
出处
《放射学实践》
北大核心
2011年第6期619-622,共4页
Radiologic Practice
