Table 2. Comparison of PSA decline and FCH PET/CT in responding vs nonresponding patients.
| Response at Follow-up FCH PET/CT Imaging Studya | PSA Response | Total | |
|---|---|---|---|
| PSA <50% | PSA >50% | ||
| Response | 12b (75%) | 4c (25%) | 16 (38%) |
| Nonresponse | 8d (31%) | 18 (69%) | 26 (62%) |
| Total | 20 (48%) | 22 (52%) | 42 (100%) |
a
Response was defined as complete response or partial remission; nonresponse was defined as stable disease or progressive disease.
b
Including 2 patients with bone flare at FCH PET/CT with SUV decline at second-follow-up PET >25%, and 1 patient with partial remission at PET but liver progression at 3-month CT only.
c
Including 1 patient with bone flare at at FCH PET/CT with PSA decline = 37.2% after 6 months of available follow-up.
d
Including 1 patient with bone flare at at FCH PET/CT with PSA decline = 48.8%, in1 patient suspected for bone flare, but PET scan was not repeated due to severe intestinal infection with treatment interruption and clinical deterioration.