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类癌是发生于消化道粘膜基底颗粒细胞(Kul-chitsky cell)的一类肿瘤,其胞浆中含有能与铬盐染料起反应的颗粒,结构类似于癌称类癌。阑尾类癌较多见,而原发性十二指肠类癌少见,
Carcinoid is a type of tumor that occurs in the Kul-chitsky cell and contains cytoplasmic particles that react with chromium salt dyes. The structure is similar to cancerous carcinoids. The appendiceal carcinoid is more common, while the primary duodenal carcinoid is rare.