Quality and Quantity of Life with Pancreatic Cancer
Quality and Quantity of Life with Pancreatic Cancer
复制标题
胰腺癌患者的生活质量和数量
作者:
J. Jacobson
In this issue, Müller-Nordhorn et al. [5] report on health-related quality of life among pancreatic cancer patients using both the questionnaire of the European Organization for Research and Treatment of Cancer (EORTC), which assesses function and symptoms, and the EuroQoL (EQ-5D) questionnaire, which assesses utilities with reference to national norms. In this analysis, two sets of norms were used: German norms from a sample approximately matched for age with the German patients participating in the study, and English norms, which are most often used in the literature. It is no surprise that the 45 consecutively recruited patients with a confirmed diagnosis of pancreatic cancer, including 20 with metastatic disease, reported impaired functioning, worse symptoms and problems, and poorer quality of life than the norm populations (exceptions were cognitive functioning and pain scales in women). The value of the study lies in its analysis of symptoms and functional areas as predictors of healthrelated quality of life. In a linear regression model adjusted for age and sex, the only statistically significant predictors of impaired quality of life were fatigue and pain, in that order. Pancreatic cancer has been shown in several studies to be associated with depression and anxiety [6–8] . In the EORTC functional scales, patients scored especially poorly on emotional and social functioning, presumably due to anxiety and depression. Whether those states are the cause or result of fatigue, pain and poor prognosis among patients with the disease or are related to disease processes remains to be determined. In the early days of oncology, about half a century ago, most cancer patients were diagnosed with late-stage disease and had poor prospects for survival. Their circumstances justified trials of highly toxic agents. Over the next few decades, clinical trial methodology evolved, and research began to achieve some successes. Today, effective treatment, not necessarily cure but significant prolongation of survival, is widely available for many common cancers. In addition, effective screening methods have been developed for several common cancers and cancer precursors, and for some cancers, early detection does indeed make curative treatment possible. According to the theory of the hierarchy of needs by Maslow [1] , once our immediate requirements for survival are addressed, we turn our attention to quality of life. Thus, as the numbers of long-term cancer survivors grew, cancer clinicians and investigators increasingly acknowledged a responsibility to minimize the adverse effects of treatment and the disease on quality of life. Cancer of the pancreas has largely been left out of the cancer research success story. Five-year survival among patients with pancreatic cancer is about 5%, and median survival is less than 1 year. Even among patients diagnosed with localized disease, 5-year survival is less than 20%. However, patients with pancreatic cancer are beginning to benefit from the growing concern of clinical cancer investigators for quality of life. Assessment of quality of life is a routine feature of pancreatic cancer clinical trials, although its purpose may be merely to find some difference between treatment arms in the absence of a difference in survival or extent of disease [2–4] . Published online: December 21, 2006