胃肠道神经内分泌肿瘤的影像学表现与病理分级

目的:探讨胃肠道神经内分泌肿瘤的影像特征并预测病理分级的价值。方法:回顾分析14例胃肠道神经内分泌肿瘤患者的影像学表现及临床资料。将肿瘤的病理分级分为神经内分泌瘤NET组(包括G1级、G2级)及神经内分泌癌NEC组(G3级)。根据肿瘤的CT及MRI表现,分析两组之间差别。结果:肿瘤位于食管1例,胃2例,小肠4例,阑尾2例,结肠3例,直肠2例。NET组10例中G1级6例,G2级4例;NEC组G3级4例。结论:胃肠道神经内分泌肿瘤有一定的影像学特征,肿瘤大小、形状、边缘、均质程度、外侵和转移等可以在术前预测其病理分级。

Imaging Manifestations and Pathological Grading of Gastrointestinal Neuroendocrine Neoplasms

Objective To investigate the imaging features of gastrointestinal neuroendocrine tumors and to predict the value of pathological grading. Methods The imaging ?ndings and clinical data of 14 patients with gastrointestinal neuroendocrine tumors were retrospectively analyzed. The pathological grading of the tumors was divided into neuroendocrine tumors (NET) group (G1 and G 2 ) and neuroendocrine cancer (NEC) group (G3). The differences between the two groups were analyzed according to the CT and MRI manifestations of the tumors. Results One case was located in esophagus, 2 cases in stomach, 4 cases in small intestine, 2 cases in appendix, 3 cases in colon and two cases in rectum. In the NET group, there were 6 cases of grade G1 and 4 cases of grade G2. And in the NEC group, there were 4 cases of grade G3. Conclusion Gastrointestinal neuroendocrine tumors have certain imaging characteristics. The size, shape, margin, even degree, invasion and metastasis of the tumors can be used to predict the pathological grading preoperatively.