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[Prognostic value of maximum standard uptake on pretreatment 18F-FDG PET/CT scan in newly diagnosed diffuse large B
Zhi-tao Ying1, Xue-juan Wang, Yu-qin Song
1Peking University Cancer Hospital & Institute, Department of Lymphoma, Key Laboratory of Carcinogenesis & Translational Research (Ministry of Education), Beijing 100142, China.
Objective:
To evaluate the prognostic value of maximum standard uptake (SUVmax) on pretreatment (18)F-fluoro-2-deoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) scan in patients with newly diagnosed diffuse large B cell lymphoma (DLBCL).
Methods:
The clinical data of 39 DLBCL patients undergoing a PET/CT scan at pre-treatment from December 2009 to October 2011 were analyzed retrospectively. SUVmax on PET/CT was evaluated by SPSS 13.0 for the associations with patient characteristics, prognostic factors, treatment efficacy and survival time.
Results:
The median SUVmax was higher in non-germinal center B cell-like (non-GCB) patients than that in GCB ones (18.0(2.2 - 40.5) vs 11.6 (5.3 - 18.7), P = 0.039). No difference of SUVmax was observed between the patients with and without bulky disease (P = 0.539). SUVmax was not associated with such patient characteristics as international protein index, age, stage, Eastern Cooperative Oncology Group performance status, lactate dehydrogenase, number of extranodal involvement and Ki-67 (all P > 0.05). No significant difference in median SUVmax existed between complete remission (CR) and non-CR patients (P = 0.312). The difference of SUVmax was insignificant for the patients with efficacy and no efficacy (P = 0.243). With the cut-off values of 10, 15, 20, the CR rate, response rate, 2-year progression-free survival (PFS) rate and 2-year overall survival (OS) rate were not different between the patients with SUVmax below and above cut-off value (all P > 0.05).
Conclusions:
The prognostic value of SUVmax on PET/CT is indeterminate. And it can not be used to predict the patient prognosis.
