Home CONTACT Neoplasma 2015 Neoplasma Vol.62, No.4, p.627-634, 2015

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Neoplasma Vol.62, No.4, p.627-634, 2015

Title: Prognostic value of interim and restaging PET/CT in Hodgkin lymphoma. Results of the CHEAP (Chemotherapy Effectiveness Assessment by PET/CT) study – long term observation
Author: Z. MILTENYI, S. BARNA, I. GARAI, Z. SIMON, A. JONA, F. MAGYARI, M. GERGELY, Z. NAGY, K. KERESZTES, P. PETTENDI, A. ILLES

Abstract:

Very few studies have determined the prognostic value of interim and restaging PET/CT in patients with Hodgkin lymphoma using current standard of care therapy outside clinical trials. We analyzed the effect of the results of interim and restaging PET/CT on the survival (overall- and relapse-free) in patients who received standard first-line treatment based on the stage of disease and risk factors. We investigated the differences between the relapse and non-relapse groups based on the clinical pathological characteristics of patients who had positive interim PET/CT results.
Between January 1, 2007 and December 31, 2011, the staging, interim and restaging PET/CT scans of patients with Hodgkin lymphoma were analyzed. The Deauville criteria were used for the evaluation of interim PET/CT scans.
One hundred and thirteen Hodgkin lymphoma patients underwent staging, interim and restaging PET/CT scans. None of the therapy was modified based on the interim PET/CT results. The median follow-up time was 43.5 months. A total of 62 early stage patients and 51 advanced stage patients were identified.

The five-year overall survival rates were 93.4% in the interim PET negative group and 58% in the interim PET positive group (p<0.001).

The five-year relapse-free survival rates for the negative and positive groups were 92.7% and 40.8%, respectively (p<0.001).

The negative predictive value was 100% in the early stage group and 82.35% in the advanced stage group. By comparison, the positive predictive values were 53.8% and 58.8%, respectively, in these two groups. In the interim PET positive group, patients over 40 years of age had a significantly higher probability of relapse (p=0.057).


The routine clinical use of interim PET/CT is highly recommended based on our investigation. However, patients with positive interim PET/CT results required frequent additional evaluations.



Keywords: predictive value, Hodgkin lymphoma, PET/CT
Published online: 18-May-2015
Year: 2015, Volume: 62, Issue: 4 Page From: 627, Page To: 634
doi:10.4149/neo_2015_075


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