原发性胃类癌是比较少见的胃肿瘤,约占所有胃肿瘤的0.3%。但最近Staren等认为,传统的胃癌形态学诊断多以组织学改变为依据。事实上胃粘膜包含各种类型的外分泌和内分泌细胞,用免疫组化等检测显示,神经内分泌瘤的病例并非少见。Harvey等也认为,胃类 Primary gastric carcinoid is a relatively rare gastric tumor, accounting for about 0.3% of all gastric tumors. However, recently, Staren et al. believe that traditional morphological diagnosis of gastric cancer is based on histological changes. In fact, the gastric mucosa contains various types of exocrine and endocrine cells. Detection by immunohistochemistry has shown that cases of neuroendocrine tumors are not uncommon. Harvey et al also think that stomach