Kitt-I'm sorry to read that your husband has Crohn's disease and wish him and you well on your treatment and management of that difficult condition.
the PSA, I think it bears checking out as you are with the planned consultation with the urologist.
My own personal choice was to do a biopsy when my PSA quadrupled in one year from the year before. Even then the chances were 15% that it was cancer. As it turns out, it was
prostate cancer. Incidentally, I was also found to have acute prostatitis. BPH and age can also make the PSA go up.
I am thankful that my prostate cancer was caught in the earliest stages, when it was the size of a pea and confined to the prostate. I've been cancer-free for a year and a half and hope to stay that way.
Take care and hang in there...Tim