Original Articles
Copyright ©The Author(s) 1998.
World J Gastroenterol. Apr 15, 1998; 4(2): 158-161
Published online Apr 15, 1998. doi: 10.3748/wjg.v4.i2.158
Figure 1
Figure 1 Type 1 gastric neuroendocrine tumorsgastrin dependent carcinoid. Histology shows typical carcinoid with trabecular arrangement. Tumor confined to the gastric mucosa, many tumor cells had positive reaction for chromogranin A. ABC method × 450
Figure 2
Figure 2 The hyperplasia and dysplasia of endocrine cells in extratumoral mucosa were found in type 1 gastrin dependent carcinoid. Endocrine cells show positive reaction for chromogranin A. ABC method × 450
Figure 3
Figure 3 Type 2 non-gastrin dependent carcinoid. Tomor invaded the muscularis propria. The hyperplasia of endocrine cells are not distinct. Diffuse synaptophysin in immunostaining of tumors. ABC method × 250
Figure 4
Figure 4 Type 3 neuroendocrine carcinoma. Tumor cells are small and round, mitoses are abundant. Focal necrosis was found. HE × 250 (left). Ultrastructural appearance of the neuroendocrine carcinoma with characteristic secrectory granules. × 28000 (right)
Figure 5
Figure 5 The survival curve of three types of gastric endocrine tumors.