COMPARATIVE STUDY
JOURNAL ARTICLE

Comparison between whole-body MRI with diffusion-weighted imaging and PET/CT in staging newly diagnosed FDG-avid lymphomas

Domenico Albano, Caterina Patti, Ludovico La Grutta, Francesco Agnello, Emanuele Grassedonio, Antonino Mulè, Giorgio Cannizzaro, Umberto Ficola, Roberto Lagalla, Massimo Midiri, Massimo Galia
European Journal of Radiology 2016, 85 (2): 313-8
26781135

OBJECTIVES: To compare whole body-MRI (WB-MRI) with diffusion-weighted imaging and FDG-PET/CT in staging newly diagnosed FDG-avid lymphomas.

METHODS: 68 patients (37 males, 31 females; median age 42 years; range 15-86 years) with histologically confirmed lymphoma (37 Classical Hodgkin, 16 Diffuse large B-cell, 10 Follicular, 5 Mantle cell) underwent both MRI and FDG-PET/CT before treatment. Ann Arbor stages obtained with WB-MRI and FDG-PET/CT were compared using Cohen's k statistics. Moreover WB-MRI and FDG-PET/CT stages were compared with the pathological stages obtained after the diagnostic iter using also bone marrow and available biopsies if clinically indicated.

RESULTS: The agreement between WB-MRI and FDG-PET/CT was excellent. WB-MRI stage was equal to those of FDG-PET/CT in 62/68 patients (91.2%). There was an excellent agreement between WB-MRI stage and pathological stage (63/68 patients; 92.6%), and between FDG-PET/CT and pathological stage (64/68 patients; 94.1%). The differences between the stages were more frequent in the patients with Mantle cell lymphoma.

CONCLUSIONS: WB-MRI can be considered as a promising technique for FDG-avid lymphoma staging.

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