a. Epithelial tumors上皮性肿瘤
i. Hyperplastic polyp 增生性息肉
ii. Sessile serrated lesions without dysplasia 无蒂锯齿状病变,无异型增生
iii. Serrated dysplasia异型增生
1. Serrated dysplasia,Low-grade 异型增生,低级别
2. Serrated dysplasia,High-grade 异型增生,高级别
iv. Low-grade appendiceal mucinous neoplasm 低级别阑尾黏液性肿瘤
v. High-grade appendiceal mucinous neoplasm 高级别阑尾黏液性肿瘤
vi. Adenocarcinoma腺癌
1. Mucinous adenocarcinoma 黏液腺癌
2. Signet cell adenocarcinoma 印戒细胞癌
vii. Carcinoma, undifferentiated 未分化癌
viii. Goblet cell adenocarcinoma 杯状细胞腺癌
ix. Neuroendocrine tumor神经内分泌肿瘤
1. Neuroendocrine tumor, grade 1 神经内分泌肿瘤,G1级
2. Neuroendocrine tumor, grade 2 神经内分泌肿瘤,G2级
3. Neuroendocrine tumor, grade 3 神经内分泌肿瘤,G3级
4. L cell tumor L细胞肿瘤
5. Glucagon like peptide producing tumor 胰高血糖素样肽生成性肿瘤
6. PP/PYY producing tumor PP/PYY生成性肿瘤
7. Enterochromaffin cell carcinoid 肠嗜铬细胞类癌
8. Serotonin producing carcinoid 5-羟色胺生成性类癌
x. Neuroendocrine carcinoma神经内分泌癌
1. Large cell neuroendocrine carcinoma 大细胞神经内分泌癌
2. Small cell neuroendocrine carcinoma 小细胞神经内分泌癌
xi. Mixed neuroendocrine–non-–neuroendocrine neoplasm (MiNEN)
混合性神经内分泌-非神经内分泌肿瘤