Abstract
Introduction
Positron emission tomography combined with computed tomography (PET/CT) is increasingly being used in the staging of esophageal cancer, and some recent studies suggested the maximal standardized uptake value (SUVmax) as a prognostic factor for prediction of survival of these patients. However, data on correlations between SUVmax and other established prognostic markers is rare, and the impact of neoadjuvant treatment on SUVmax ability to predict outcome is not clear. The aim of the present study was therefore to evaluate the prognostic significance of the SUVmax in patients with or without neoadjuvant therapy (NAT) by comparing SUVmax to different established prognostic factors and survival.
Methods
Esophageal cancer patients receiving either neoadjuvant therapy or no pretreatment before surgery were included in our study, and correlations between SUVmax and prognostic factors such as tumour/nodal stage, grading, tumour length or survival were investigated.
Results
Between January 2004 and December 2011, a total of 114 patients was included (mean age 63 years, 96 men, 36 SCC, 78 adenocarcinoma). A number of 74 patients underwent neoadjuvant therapy. The median follow-up was 52 months. The SUVmax was significantly correlated to initial tumour stage (p = 0.000) and tumour length (p ≤ 0.010). Survival was significantly better in patients undergoing primary surgery if SUVmax was <6 compared to SUVmax >6 (p = 0.008), whereas neither neoadjuvant-treated patients in general (p = 0.950) nor the different subgroups of responders showed a comparable correlation between survival and SUVmax (complete responder p = 0.808, partial responder p = 0.409, nonresponder p = 0.529).
Conclusion
The SUVmax highly correlates with well-known prognostic factors and survival of esophageal cancer patients after surgery but only in case of primary surgery and not if patients received neoadjuvant therapy.
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Authors’ contributions
Kirsten Lindner contributed to the study conception and design, acquisition of data, analysis and interpretation of data and drafting of the manuscript.
Daniel Palmes contributed to the study conception and critical revision of manuscript.
Norbert Senninger contributed to the critical revision of manuscript.
Richard Hummel contributed to the analysis and interpretation of data, drafting and revision of manuscript.
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Lindner, K., Palmes, D., Senninger, N. et al. PET/CT predicts survival in patients undergoing primary surgery for esophageal cancer. Langenbecks Arch Surg 400, 229–235 (2015). https://doi.org/10.1007/s00423-014-1264-9
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DOI: https://doi.org/10.1007/s00423-014-1264-9