2020年版WHO阑尾肿瘤组织学分类

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