肿瘤病人,尤其是恶性肿瘤病人常常有营养不良的表现,其发生机理除了肿瘤本身引起的消化道梗阻、肿瘤引起的大出血、感染以及肿瘤病人接受放疗、化疗外,还有一个重要的原因是肿瘤病人在患瘤早期就发生了许多代谢方面的异常。研究和探讨带瘤机体的代谢异常对防治肿瘤性营养不良的发生无疑具有重大的理论和现实的意义。 Tumor patients, especially patients with malignant tumors, often have malnutrition manifestations. Besides the pathogenesis of digestive tract obstruction caused by the tumor itself, tumor-induced hemorrhage and infection, and tumor patients receiving radiotherapy and chemotherapy, an important reason is that tumors Many metabolic abnormalities occur early in the patient’s tumor. It is undoubtedly of great theoretical and practical significance to study and explore the metabolic abnormalities of tumor-bearing organisms in the prevention and treatment of tumor malnutrition.