问何谓胃肠道类癌和类癌综合征?如何区别?答胃肠道类癌(Carinoid)是一种低恶性和不常见的肿瘤。它来自内胚层上皮的嗜银细胞(Kulchitskyt’s cell),可用银盐染色,又称为嗜银细胞癌(Argentaffinoma);它也可与铬盐染色起反应,故也称为嗜铬细胞癌(En-tero—chromaffinoma)。但并非所有嗜银细胞都属于肠嗜铬细胞,同时各部位的类癌亦非皆为嗜银细胞,故目前临床仍采用类癌一词。嗜银细胞分布较广,包括支气管、食管、胃十二指肠、空回肠、Meckel’s 憩室、阑尾、 Ask what is the gastrointestinal carcinoid and carcinoid syndrome? How to distinguish? A gastrointestinal carcinoid (Carinoid) is a low-grade and uncommon tumor. It is derived from the keratinocytes of the endoderm epithelium (Kulchitskyt’s cell) and stains with silver salts, also known as Argentaffinoma; it also reacts with the staining of chromium salts and is also known as pheochromocytoma (En -tero—chromaffinoma). However, not all argyrophil cells belong to the intestine chromaffin cells. At the same time, all types of carcinoid cells are also eutrophic cells. Therefore, the term carcinoid is still used clinically. The argyrophilic cells are widely distributed, including bronchus, esophagus, gastroduodenal, empty ileum, Meckel’s diverticulum, appendix,