Case Report
Copyright ©2013 Baishideng Publishing Group Co.
World J Gastroenterol. Nov 28, 2013; 19(44): 8151-8155
Published online Nov 28, 2013. doi: 10.3748/wjg.v19.i44.8151
Figure 2
Figure 2 Immunohistochemistry. A: The tumor cells exhibited diffuse and strong expression of chromogranin A; B: S100 protein highlighted the presence of slender sustentacular cells located at the periphery of the tumor nests; C: The Ki67 index was approximately 20%; D: CD34 outlined the rich vascular network.