Objective: To evaluate the relationship between antiandrogen withdrawal and change in prostate-specific antigen (PSA) when the antiandrogen in question is other than flutamide.
Methods: Presented is a case of a patient in whom the antiandrogen casodex was discontinued after clinical progression despite combined androgen blockade.
Results: A transient decline in serum PSA was observed after casodex withdrawal.
Conclusions: The relationship between antiandrogen withdrawal and a change in PSA may be a general phenomenon, not unique to flutamide.