Fig. 6

FDG uptake on PET-CT in a 57-year-old woman affected by pulmonary and splenic sarcoidosis. Increased metabolic activity is appreciable in the left pulmonary hilum, due to pathological lymph nodes (white arrowheads on Fig. 6a–b). Similarly, splenic foci of increased metabolic activity are clearly seen on axial CT-PET acquisitions (empty white arrowheads respectively on Fig. 6c–d), and on coronal and sagittal reformatted images (white arrows in Fig. 6e–h)