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FIGURE 2. FDG PET (A–E), CT (F), and 131I scintigraphy (G) of patient E (Table 1). (A–C) Under TSH suppression, note unusual configured uptake pattern in right pelvic area (arrow). Moderate uptake intensity corresponds with that of surrounding intestinal tissues. (D and E) With TSH stimulation, note increase in uptake intensity consistent with malignancy; configuration of lesion is unchanged. (F) Osteodestruction of lateral part of right sacrum as well as osteolysis on left caused by soft-tissue lesion. (G) Intensive 131I uptake in right and left halves of sacrum, in hepatic vault, and in lung. There is no evidence of FDG metabolism in latter tumor manifestations.
