Fig. 4From: Diagnostic value of FDG-PET/CT in fever of unknown origin34-year-old female patient presented with fever of unknown etiology, fatigue and mild sore throat. a Coronal CT image, b Coronal PET image with attenuation correction showing enlarged liver and spleen with mildly increased splenic activity. c Sagittal PET/CT fused reconstructed image. d Sagittal PET attenuation corrected image, both showing increased nasopharyngeal activity with SUV max of (blue arrows). e Axial CT image of the neck. f Axial fused PET/CT image of the neck at the same level sowing right cervical metabolically active lymph nodes. g, h axial fused PET/CT and axial CT of the abdomen showing the enlarged spleen with ill-defined area of increased activity of its anterior pole. Other findings included diffuse increased marrow activity with SUV max of 3.3(not shown here). Her work-up showed positive Epstein Barr IgMBack to article page