Neuroendocrine Tumors of the Gi and Pancreatobiliary Tract
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چکیده
1. Incipient neuroendocrine neoplasia: Dysplasia/Tis 2. True neuroendocrine tumors a. Well differentiated NETs (carcinoids, pancreatic neuroendocrine neoplasms) b. High-grade neuorendocrine carcinoma 3. Hybrid tumors a. Mixed tumors i. Mixed adenocarcinoma-neuorendocrine carcinoma ii. Mixed neuorendocrine tumor and non-neuroendocrine carcinoma iii. Duodenal gangliocytic paraganglioma b. Incidental neuroeondocrine proliferations in epithelial tumors c. Chimeric tumors (neoplasms with incomplete neuroendocrine differentiation) i. Goblet cell carcinoids, conventional type ii. Dedifferentiated goblet cell carcinoids (adenocarcinoma ex-GCC) 4. Others a. Non epithelialorigin tumors with NE differentiation (small blue cell tumors), induced or aberrant NE differentiation; secondary (metastatic) neuroendocrine neoplasms
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