More from ASCO 2023 [1]:
“We found in ARCHES that in the men who developed radiographic progression while on ADT-enzalutamide [Xtandi], two thirds of these patients, when they had radiographic progression, did not meet PSA progression criteria, and one third didn't have any rise at all in their PSA,” says Andrew J. Armstrong, MD, MSc."
Imaging becomes important when PSA becomes unreliable.
-Patrick