Figure 3

The scout film of the positron emission tomography-computed tomography (PET-CT) scan performed prior to this first round of chemotherapy (a) demonstrates diffuse regions of uptake involving multiple ribs, multiple vertebral bodies, the pelvis, the sternum and the scapula. There is also increased fluorodeoxyglucose (FDG) uptake in multiple bilateral lymph node regions extending from the jugular, supraclavicular, mediastinal, retroperitoneal, pelvic and inguinal regions, consistent with Hodgkin's lymphoma. There is increased FDG uptake in the posterior and right lateral walls of the nasopharynx. About two months after his first round of chemotherapy, a repeat PET-CT scan (b) showed a marked interval decrease in the FDG-avid metastatic burden.