胰腺神经内分泌肿瘤病理学分级诊断

Pathological grading diagnosis of pancreatic neuroendocrine neoplasms

胰腺神经内分泌肿瘤的病理学诊断是临床治疗和判断预后的重要基础。不同阶段的诊断标准存在不同临床意义,日趋完善。总的分级原则,由以往关注肿瘤大小等分期要素,发展为以肿瘤增殖程度作为主要标准,到以分化程度作为先决条件,结合增殖指数进行分级。首先依据形态分为神经内分泌瘤和神经内分泌癌,然后根据核分裂像和Ki67增殖指数把前者分为G1,G2,G3三级。

The pathological grading diagnosis of pancreatic neuroendocrine neoplasms is the basis of clinical treatment and prognosis.The general principle guiding the classification of NEN has been evoluted several times.From the size of tumor,to the proliferation index as a key factor,and subsequently proposed distuishing between well-differentiated neuroendocrine tumors and poorly differentiated neuroendocrine carcinomas.Firstly,neuroendocrine tumors and neuroendocrine carcinomas were classified according to their morphology.Then,according to mitotic image and Ki67 proliferation index,the former was classified into G1,G2 and G3 grades.