内源性阿片肽系统(e n d o-genous opioid system)有参与疼痛过程的调节、对应激的反应以及止痛治疗的作用。最近人体影像学显示其对内脏疼痛有显著的紧张调节作用,从而提出一个这样问题:内源性阿片是否对内脏癌症的疼痛也有紧张调节作用。Sevcik MA等人进行了一项研究[Gastroe The endogenous opioid system (e n d o-genous opioid system) involved in the regulation of the pain process, the response to stress and the role of analgesic therapy. Recently, human body imaging has shown that it has a significant tension-regulating effect on visceral pain, thereby raising the question of whether endogenous opioids also have a tightening effect on visceral cancer pain. A study by Sevcik MA and others [Gastroe