Findings: Almost all of the hypermetabolic lesions seen on previous study demonstrate increased FDG uptake on later study. Multiple small hypermetabolic liver lesions are only seen on the later study except for one of the lesion that was seen in retrospect on previous study. Maximum standardized uptake values (SUV max) were computed for the following osseous lesions: LESION: SUVmax (baseline or initial)/SUVmax (post-estradiol) Right cervical level 2 lymph node: 11.52 / 12.91 T6: 5.9/8.2 T9: 6.8/11.3 T12: 8.4/ 8.8 L1: 9.5/11 Right iliac bone: 9.8/10.4 The average maximum SUV for the baseline study was 6.9 and the average maximal SUV of the post-estradiol study was 10.4. The estradiol challenge resulted in an 51% increase in average maximum SUV. |