What is your age, what sort of treatment have you had for prostate cancer
, any more details to help me answer your question.
In the short of it, a PSA doubling time of one month should be indicative of serious morphological changes in your prostate. With a baseline PSA of 21, I imagine you are already under the care of a urologist.
Ashutosh (Ash) K. Tewari, MD
This forum is for information only.