胃肠道类癌生长较缓慢,但仍然是一恶性病变。本病的其他特征为多发性(即多中心)、同时伴有其他原发性肿瘤,以及最近提出类癌可能起源于神经嵴的神经外胚层细胞,因而是值得加以研究的病损。作者等复习了Hines退伍军人医院1950～1976年间的病史记录和肿瘤登记卡,发现胃肠道类癌76例,其中49例为临床诊断(其中1例网膜活检证实,但未确定原发部位),217例为尸检发现。临床诊断的48例类癌中,小肠(包括十二指肠)类癌最多,占47.9％(23例),其中45％在诊断时已有转移。多数结肠类癌和全部胃类癌发现时已有转移,直径大于2cm的小肠和直肠类癌在诊断时都已有转移。类癌诊断时的平均年龄:小肠是57岁,阑尾36岁,结肠和 Gastrointestinal carcinoid growth is relatively slow, but it is still a malignant disease. Other features of this disease are multiple (ie, multi-centered), accompanied by other primary tumors, and neuroectodermal cells that have recently been suggested to have carcinoid origins in neural crest and are therefore worthy of study. The authors reviewed the history records and tumor registration card of the Hounes Veterans Hospital from 1950 to 1976 and found 76 cases of gastrointestinal carcinoid tumors, of which 49 were clinical diagnoses (one of them was confirmed by omental biopsy but the primary site was not identified. ), 217 cases were autopsy findings. Of the 48 carcinoids clinically diagnosed, the most common were carcinoids of the small intestine (including duodenum), accounting for 47.9% (23 cases), of which 45% had metastasized at the time of diagnosis. Most colon carcinoids and all gastric carcinoids have metastases when they are discovered. Small intestine and rectal carcinoids larger than 2 cm in diameter have metastasized at the time of diagnosis. The average age at the time of diagnosis of carcinoid: the small intestine is 57 years old, the appendix is ​​36 years old, colon and