Abstract
Purpose To investigate the expression of chromogranin A(CgA)in gastroenteropancreatic neuroendo-crine neoplasms(GEP-NENs)and its relationship with clinicopathological features.Methods The clinicopathological data of GEP-NENs diagnosed in the Department of Pathology,Beijing Chao-yang Hospital,Capital Medical University from May 2011 to December 2024 were retrospectively analyzed.Immunohistochemical staining was applied to evaluate the expression of CgA,and the patients were divided into CgA(+)group and CgA(-)group.Differences in clinico-pathological features between the 2 groups were compared.Results The age of 229 patients ranged from 21 to 89 years,with an average age of 54.4 years.The most common primary site was the rectum(56.8％,130/229),fol-lowed by the stomach(16.6％,38/229),pancreas(14.4％,33/229),small intestine(6.1％,14/229),and colon(6.1％,14/229).There were 206 cases of single lesion and 23 cases of multiple lesions(number of tumors ≥2).There were 153 cases of G1(66.8％),29 cases of G2(12.7％),7 cases of G3(3.1％),and 40 cases of neuroendocrine carcinoma(NEC,17.5％).The positive rates of CgA in G1,G2,G3,and NEC groups were 37.2％,75.8％,71.4％,and 65.0％,respectively,with statistically significant differences(P＜0.001).The positive rates of CgA in T1,T2,T3,and T4 were 37.2％,83.3％,75.9％,and 57.7％,respectively,with statistically significant differences(P＜0.001).There were significant differences in age,vascular invasion,lymph node metasta-sis,and number of tumors between CgA(+)group and CgA(-)group(P＜0.001),but there was no significant difference in sex,tumor location,Syn,and CD56 expression between the two groups(P=0.595,P=0.098,P=0.173,P=0.557).Conclusion Immunohistochemical antibody CgA is a useful marker for GEP-NENs.CgA positiv-ity may be a poor prognostic factor for GEP-NENs patients.关键词
神经内分泌肿瘤/胃肠/胰腺/嗜铬素A/免疫组织化学Key words
neuroendocrine neoplasms/gastrointestinal/pancreas/CgA/immunohistochemistry分类
医药卫生
