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Annals of Oncology Advance Access originally published online on February 17, 2007
Annals of Oncology 2007 18(4):658-664; doi:10.1093/annonc/mdl493
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© 2007 European Society for Medical Oncology

hematologic malignancies

Cost-effective therapy remission assessment in lymphoma patients using 2-[fluorine-18]fluoro-2-deoxy-D-glucose–positron emission tomography/computed tomography: is an end of treatment exam necessary in all patients?

K Strobel1,*, NG Schaefer2, C Renner2, P Veit-Haibach1, D Husarik1, AY Koma1 and TF Hany1

1 Department of Nuclear Medicine, University Hospital Zurich
2 Department of Internal Medicine, Oncology, University Hospital Zurich, Zurich, Switzerland

* Correspondence to: Dr K. Strobel, Division of Nuclear Medicine, University Hospital Zurich, Raemistr. 100, CH-8091 Zurich, Switzerland. Tel: +41-1-255-28-50; Fax: +41-1-255-44-14; E-mail: klaus.strobel{at}usz.ch

Background: The aim of this study was to evaluate the necessity of 2-[fluorine-18]fluoro-2-deoxy-D-glucose–positron emission tomography/computed tomography (FDG–PET/CT) after end of treatment in lymphoma patients who had an interim FDG–PET/CT.

Patients and methods: In 38 patients with Hodgkin's disease (HD) and 30 patients with non-Hodgkin's lymphoma (NHL) interim PET/CT (intPET) after two to four cycles of chemotherapy and PET/CT after completion of first-line treatment (endPET) were carried out. Cost reduction was retrospectively calculated for the potentially superfluous endPET examinations.

Results: In 31 (82%) HD patients, intPET demonstrated complete remission (CR) which was still present on endPET. The remaining seven HD patients (18%) had partial remission (PR) on intPET. For NHL, 22 (73%) patients had CR on intPET analysis which was still present on endPET. In the remaining eight NHL patients, intPET revealed PR in seven and stable disease in one patient. None of all intPET complete responders progressed until the end of therapy. Thus, of the 196 PET/CT's carried out in our study population, 53 endPET's (27.0%) were carried out in interim complete responders.

Conclusion: End-treatment PET/CT is unnecessary if intPET shows CR and the clinical course is uncomplicated. An imaging cost reduction of 27% in our study population could have been achieved by omitting end of treatment FDG–PET/CT in interim complete responders.

Key words: lymphoma, therapy, remission assessment, FDG-PT/CT, cost effectiveness


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Ann Oncol 2007 18: 613. [Extract] [Full Text]  





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