Accurate prognosis in patients with lung cancer is important for clinical decision making and treatment selection. The TNM staging system is currently the main method for establishing prognosis. Using this system, pat...Accurate prognosis in patients with lung cancer is important for clinical decision making and treatment selection. The TNM staging system is currently the main method for establishing prognosis. Using this system, patients are grouped into one of four stages based on primary tumor extent, nodal disease, and distant metastases. However, each stage represents a range of disease extent and may not on its own be the best reflection of individual patient prognosis. 18F-fluorodeoxyglucose_positron emission tomography （18F-FDG-PET） can be used to evaluate the metabolic tumor burden affecting the whole body with measures such as metabolic rumor volume （MTV） and total lesion glycolysis （TLG）. MTV and TLG have been shown to be significant prognostic factors in patients with lung cancer, independent of TNM stage. These metabolic tumor burden measures have the potential to make lung cancer staging and prognostication more accurate and quantitative, with the goal of optimizing treatment choices and outcome predictions.展开更多
目的:探讨18F-FDG-PET/CT显像在初诊结外NK/T细胞淋巴瘤(ENKTL)中的应用价值。方法:回顾性分析43例初诊ENKTL患者的PET/CT及CT资料,比较两种影像方法对病灶位置、病变范围、分型、分期及治疗方案的影响,分析18F-FDG最大标准摄取值(SUVm...目的:探讨18F-FDG-PET/CT显像在初诊结外NK/T细胞淋巴瘤(ENKTL)中的应用价值。方法:回顾性分析43例初诊ENKTL患者的PET/CT及CT资料,比较两种影像方法对病灶位置、病变范围、分型、分期及治疗方案的影响,分析18F-FDG最大标准摄取值(SUVmax)与分型、分期及全身症状的关系。结果:病变部位处于前4位的分别为鼻(76.74%)、鼻咽部(41.86%)、咽淋巴环(30.23%)及副鼻窦(27.91%),有4例患者上呼吸消化道部位未发现18F-FD G摄取;PET/C T分期与全身症状关系有显著相关性(P<0.01);43例患者S U Vm ax为13.65±6.35,比较早期(Ⅰ/Ⅱ期)与进展期(Ⅲ/Ⅳ期)、Ⅰ期局限型与超腔型、是否合并全身症状等患者的S U Vm ax值差异有统计学意义;PET/CT分期与传统CT相比有21例不同,其中14例对制定治疗方案有影响;8例CT判断为早期,而PET/CT更改为进展期,21例早期病例中有6例如果应用PET/CT,则应更改放疗方案。结论:PET/CT能更准确显示ENKTL的病灶位置及范围,较传统CT分期方法更准确可靠,对治疗方案制定有较大的指导价值,值得临床推广应用。展开更多
BACKGROUND There are limited data on the use of glucose transport protein 1(GLUT-1)expre-ssion as a biomarker for predicting lymph node metastasis in patients with colorectal cancer.GLUT-1 and GLUT-3,hexokinase(HK)-II...BACKGROUND There are limited data on the use of glucose transport protein 1(GLUT-1)expre-ssion as a biomarker for predicting lymph node metastasis in patients with colorectal cancer.GLUT-1 and GLUT-3,hexokinase(HK)-II,and hypoxia-induced factor(HIF)-1 expressions may be useful biomarkers for detecting primary tumors and lymph node metastasis when combined with fluorodeoxyglucose(FDG)uptake on positron emission tomography/computed tomography(PET/CT).AIM To evaluate GLUT-1,GLUT-3,HK-II,and HIF-1 expressions as biomarkers for detecting primary tumors and lymph node metastasis with 18F-FDG-PET/CT.METHODS This retrospective study included 169 patients with colorectal cancer who underwent colectomy and preoperative 18F-FDG-PET/CT at Chungbuk National University Hospital between January 2009 and May 2012.Two tissue cores from the central and peripheral areas of the tumors were obtained and were examined by a dedicated pathologist,and the expressions of GLUT-1,GLUT-3,HK-II,and HIF-1 were determined using immunohisto-chemical staining.We analyzed the correlations among their expressions,various clinicopathological factors,and the maximum standardized uptake value(SUVmax)of PET/CT.RESULTS GLUT-1 was found at the center or periphery of the tumors in 109(64.5%)of the 169 patients.GLUT-1 positivity was significantly correlated with the SUVmax of the primary tumor and lymph nodes,regardless of the biopsy site(tumor center,P<0.001 and P=0.012;tumor periphery,P=0.030 and P=0.010,respectively).GLUT-1 positivity and negativity were associated with higher and lower sensitivities of PET/CT,respectively,for the detection of lymph node metastasis,regardless of the biopsy site.GLUT3,HK-II,and HIF-1 expressions were not significantly correlated with the SUVmax of the primary tumor and lymph nodes.CONCLUSION GLUT-1 expression was significantly correlated with the SUVmax of 18F-FDG-PET/CT for primary tumors and lymph nodes.Clinicians should consider GLUT-1 expression in preoperative endoscopic biopsy in interpreting PET/CT findings.展开更多
文摘Accurate prognosis in patients with lung cancer is important for clinical decision making and treatment selection. The TNM staging system is currently the main method for establishing prognosis. Using this system, patients are grouped into one of four stages based on primary tumor extent, nodal disease, and distant metastases. However, each stage represents a range of disease extent and may not on its own be the best reflection of individual patient prognosis. 18F-fluorodeoxyglucose_positron emission tomography （18F-FDG-PET） can be used to evaluate the metabolic tumor burden affecting the whole body with measures such as metabolic rumor volume （MTV） and total lesion glycolysis （TLG）. MTV and TLG have been shown to be significant prognostic factors in patients with lung cancer, independent of TNM stage. These metabolic tumor burden measures have the potential to make lung cancer staging and prognostication more accurate and quantitative, with the goal of optimizing treatment choices and outcome predictions.
文摘目的:探讨18F-FDG-PET/CT显像在初诊结外NK/T细胞淋巴瘤(ENKTL)中的应用价值。方法:回顾性分析43例初诊ENKTL患者的PET/CT及CT资料,比较两种影像方法对病灶位置、病变范围、分型、分期及治疗方案的影响,分析18F-FDG最大标准摄取值(SUVmax)与分型、分期及全身症状的关系。结果:病变部位处于前4位的分别为鼻(76.74%)、鼻咽部(41.86%)、咽淋巴环(30.23%)及副鼻窦(27.91%),有4例患者上呼吸消化道部位未发现18F-FD G摄取;PET/C T分期与全身症状关系有显著相关性(P<0.01);43例患者S U Vm ax为13.65±6.35,比较早期(Ⅰ/Ⅱ期)与进展期(Ⅲ/Ⅳ期)、Ⅰ期局限型与超腔型、是否合并全身症状等患者的S U Vm ax值差异有统计学意义;PET/CT分期与传统CT相比有21例不同,其中14例对制定治疗方案有影响;8例CT判断为早期,而PET/CT更改为进展期,21例早期病例中有6例如果应用PET/CT,则应更改放疗方案。结论:PET/CT能更准确显示ENKTL的病灶位置及范围,较传统CT分期方法更准确可靠,对治疗方案制定有较大的指导价值,值得临床推广应用。
文摘BACKGROUND There are limited data on the use of glucose transport protein 1(GLUT-1)expre-ssion as a biomarker for predicting lymph node metastasis in patients with colorectal cancer.GLUT-1 and GLUT-3,hexokinase(HK)-II,and hypoxia-induced factor(HIF)-1 expressions may be useful biomarkers for detecting primary tumors and lymph node metastasis when combined with fluorodeoxyglucose(FDG)uptake on positron emission tomography/computed tomography(PET/CT).AIM To evaluate GLUT-1,GLUT-3,HK-II,and HIF-1 expressions as biomarkers for detecting primary tumors and lymph node metastasis with 18F-FDG-PET/CT.METHODS This retrospective study included 169 patients with colorectal cancer who underwent colectomy and preoperative 18F-FDG-PET/CT at Chungbuk National University Hospital between January 2009 and May 2012.Two tissue cores from the central and peripheral areas of the tumors were obtained and were examined by a dedicated pathologist,and the expressions of GLUT-1,GLUT-3,HK-II,and HIF-1 were determined using immunohisto-chemical staining.We analyzed the correlations among their expressions,various clinicopathological factors,and the maximum standardized uptake value(SUVmax)of PET/CT.RESULTS GLUT-1 was found at the center or periphery of the tumors in 109(64.5%)of the 169 patients.GLUT-1 positivity was significantly correlated with the SUVmax of the primary tumor and lymph nodes,regardless of the biopsy site(tumor center,P<0.001 and P=0.012;tumor periphery,P=0.030 and P=0.010,respectively).GLUT-1 positivity and negativity were associated with higher and lower sensitivities of PET/CT,respectively,for the detection of lymph node metastasis,regardless of the biopsy site.GLUT3,HK-II,and HIF-1 expressions were not significantly correlated with the SUVmax of the primary tumor and lymph nodes.CONCLUSION GLUT-1 expression was significantly correlated with the SUVmax of 18F-FDG-PET/CT for primary tumors and lymph nodes.Clinicians should consider GLUT-1 expression in preoperative endoscopic biopsy in interpreting PET/CT findings.
