胃肠道类癌生长较缓慢,自然病程较长,为潜在恶性或低度恶性伸瘤,具有可同时或异时多发性或伴有其他肿瘤的特点。临床多无特异性表现,少数可有类癌综合征,可发生胃肠道出血、梗阻及穿孔等并发症,预后较胃肠道腺癌为好。 Gastrointestinal carcinoid growth is relatively slow, and the natural course is longer. It is a potentially malignant or low-grade malignant tumor. It has the characteristics that it may be present at the same time or at different times or with other tumors. Many clinical non-specific performance, a few may have carcinoid syndrome, gastrointestinal bleeding, obstruction and perforation and other complications may occur, the prognosis is better than gastrointestinal adenocarcinoma.