类癌为神经内分泌肿瘤，属APUD系统。既往大量的关于类癌的临床及病理特点、处理方法的回顾性总结限于单个医疗单位的小宗病例报告，各医疗单位之间的总结结果不尽相同，有些甚至相反。本文作者复习了马萨诸萨州综合医院20年间150例胃肠道类癌。临床分析内容包括年龄、性别、症 Carcinoid as a neuroendocrine tumor, is an APUD system. In the past, a large number of clinical and pathological features of carcinoid tumors were retrospectively summarized. The retrospective summary of treatment methods was limited to a small case report from a single medical unit. The results of different medical units were different and some were even opposite. The authors reviewed 150 cases of gastrointestinal carcinoid tumors at the Massachusetts General Hospital for 20 years. Clinical analysis includes age, gender, disease