Fig. 19

Skeletal sarcoidosis in a 71-year-old woman. Bilateral thoracic hilar lymphadenopathy is shown on PET-CT (Fig. 19a, white arrowheads). Increased sites of metabolic activity are also recognizable in the right scapula (Fig. 19b), in the sacrum and in the iliac crest (Fig. 19d). In presence of thoracic features of sarcoidosis, bone sites of increased uptake can be interpreted as “skeletal sarcoidosis”