人类内分泌肿瘤常常难以定位,大多数胰腺内分泌瘤和类癌存在生长抑素的受体。过去已成功地应用生长抑素类似物八肽抑素(octreotide,SMS201～995)控制患这些肿瘤的大多数患者的症状。消化道存在丰富的生长抑素,大多数局限在胃肠粘膜和 Human endocrine tumors are often difficult to locate and most pancreatic endocrine tumors and carcinoids have somatostatin receptors. The somatostatin analog octreotide (SMS201-995) has been successfully used in the past to control the symptoms of most patients suffering from these tumors. There are abundant somatostatin in the digestive tract, most of which are limited to the gastrointestinal mucosa and