Published in:
01-11-2014 | Original Article
Pretherapy metabolic tumour volume is an independent predictor of outcome in patients with diffuse large B-cell lymphoma
Authors:
Myriam Sasanelli, Michel Meignan, Corinne Haioun, Alina Berriolo-Riedinger, René-Olivier Casasnovas, Alberto Biggi, Andrea Gallamini, Barry A. Siegel, Amanda F. Cashen, Pierre Véra, Hervé Tilly, Annibale Versari, Emmanuel Itti
Published in:
European Journal of Nuclear Medicine and Molecular Imaging
|
Issue 11/2014
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Abstract
Purpose
We investigated the prognostic value of total metabolic tumour volume (TMTV) in diffuse large B-cell lymphoma (DLBCL).
Methods
TMTV was measured in 114 patients with newly diagnosed DLBCL who underwent 18F-FDG PET/CT at baseline before immunochemotherapy. TMTV was computed by summing the volumes of all lymphomatous lesions after applying the local SUVmax threshold of 41 % using semiautomatic software. Prognostic value was assessed by Kaplan-Meier estimates of progression-free survival (PFS) and overall survival (OS).
Results
Median follow-up was 39 months. Average pretherapy TMTV was 509 ± 568 cm3. The 3-year estimates of PFS were 77 % in the low metabolic burden group (TMTV ≤550 cm3) and 60 % in the high metabolic burden group (TMTV >550 cm3, p = 0.04), and prediction of OS was even better (87 % vs. 60 %, p = 0.0003). Cox regression showed independence of TMTV for OS prediction (p = 0.002) compared with other pretherapy indices of tumour burden, such as tumour bulk and the International Prognostic Index.
Conclusion
Pretherapy TMTV is an independent predictor of outcome in patients with DLBCL.