Clinical and prognostic role of interim 18F-FDG PET/CT in elderly Hodgkin lymphoma: a dual-center experience

Hodgkin lymphoma (HL) has a bimodal age distribution curve, with a second peak in people aged more than 60 years. Interim PET/CT (iPET/CT) is highly predictive for PFS and OS in young HL, but it has not been sufficiently studied in the elderly. In this retrospective dual-center study, 82 patients with HL and aged 65 or more who performed iPET/CT were included. At iPET/CT, 60 patients had a complete metabolic response, 18 partial responses, and 4 progressions of disease. Baseline PET/CT metabolic features were not significantly correlated with the metabolic response at interim. In patients with interim complete metabolic response, PFS and OS were significantly longer than in patients without complete response(