Fig. 2

PET/CT and MRI findings of case 1. a PET/CT shows little 18F-fluorodeoxyglucose uptake at the site of the mass (maximum standardized uptake value: 4.11–4.95) in case 1. b MRI shows speckled contrast within the spleen during the early phase. c MRI during the late phase shows several ring-enhanced nodules in the spleen. d MRI shows no obvious nodules during the delayed phase. PET/CT positron emission tomography/computed tomography, MRI magnetic resonance imaging