{"title":"Prognostic value of [<sup>18</sup>F]FDG PET/CT in follicular lymphoma.","authors":"A Díaz Silván, D Cabello García, L F Otón Sánchez","doi":"10.1016/j.remnie.2025.500229","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>To determine the prognostic value of [<sup>18</sup>F]FDG PET/CT in follicular lymphoma (FL) patients in our routine clinical practice.</p><p><strong>Material and methods: </strong>Retrospective study of FL patients assessed with PET/CT in our centre from 01/06/2008 to 01/06/2020. This study aimed to investigate the prognostic value of quantitative parameters (MTV, TLG, ΔSUV max) and qualitative criteria (Lugano classification), and its relationships with progression-free survival (PFS) and overall survival (OS).</p><p><strong>Results: </strong>Among patients with available staging PET/CT, the 5-year OS was 90.4% for those with lower MTV and 89.7% for those with higher MTV (p = 0.3). The PFS was 77.6% for those with lower MTV and 53.2% for those with higher MTV (p = 0.001). TLG yielded statistically similar results. A ΔSUV max ≥ 66% was associated with higher OS and PFS at 5 years, at both interim and final PET/CT studies (iPET and fPET). The 5-year OS for patients with complete metabolic response was 86.3% in iPET and 89.0% in fPET, compared to 84.1% and 79.0%, respectively, for those positive in iPET (p = 0.3) and fPET (p = 0.1). The 5-year PFS for patients with complete metabolic response was 76.9% in iPET and 73.1% in fPET, compared to 58.7% and 62.2%, respectively, for those positive in iPET (p = 0.04) and fPET (p = 0.09).</p><p><strong>Conclusions: </strong>PET/CT is valuable as a prognostic factor in FL, both during staging (providing parameters with independent prognostic value such as MTV and TLG) and during and after treatment (as it correlates with survival).</p>","PeriodicalId":94197,"journal":{"name":"Revista espanola de medicina nuclear e imagen molecular","volume":" ","pages":"500229"},"PeriodicalIF":0.0000,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Revista espanola de medicina nuclear e imagen molecular","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1016/j.remnie.2025.500229","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Objective: To determine the prognostic value of [18F]FDG PET/CT in follicular lymphoma (FL) patients in our routine clinical practice.
Material and methods: Retrospective study of FL patients assessed with PET/CT in our centre from 01/06/2008 to 01/06/2020. This study aimed to investigate the prognostic value of quantitative parameters (MTV, TLG, ΔSUV max) and qualitative criteria (Lugano classification), and its relationships with progression-free survival (PFS) and overall survival (OS).
Results: Among patients with available staging PET/CT, the 5-year OS was 90.4% for those with lower MTV and 89.7% for those with higher MTV (p = 0.3). The PFS was 77.6% for those with lower MTV and 53.2% for those with higher MTV (p = 0.001). TLG yielded statistically similar results. A ΔSUV max ≥ 66% was associated with higher OS and PFS at 5 years, at both interim and final PET/CT studies (iPET and fPET). The 5-year OS for patients with complete metabolic response was 86.3% in iPET and 89.0% in fPET, compared to 84.1% and 79.0%, respectively, for those positive in iPET (p = 0.3) and fPET (p = 0.1). The 5-year PFS for patients with complete metabolic response was 76.9% in iPET and 73.1% in fPET, compared to 58.7% and 62.2%, respectively, for those positive in iPET (p = 0.04) and fPET (p = 0.09).
Conclusions: PET/CT is valuable as a prognostic factor in FL, both during staging (providing parameters with independent prognostic value such as MTV and TLG) and during and after treatment (as it correlates with survival).