I don't know if this will help or not, but my local urologist said I had a rough spot, he called it a "phlebus" for the past 10 years. I never heard of this term before, could not fnd it on the internet anywhere. Anyway, he never worried about until last year, when my PSA went from 1.9 to 2.85 in one year. First biopsy "suspicous for cancer for diagnostic" , second biopsy in 08/2008 showed early prostate Ca in 2/12 cores. I had robotic prostatecomy on 09/11/08. If the PSA doesn't change I think you are OK, if and when PSA elevates it's time for the biopsy, just keep on top of this issue, it may save your life someday....................
...and welcome. Hope your stay is brief and that you do NOT have PCa.
Re the rough spot/nodule, as Steve and swimom indicated, this could very well be a calcification. With your low PSA and no symptoms of infection, most docs probably would do as your doc has suggested and ask that you get a biopsy.
On the positive front, less than 50% of these nodules turn out to be cancerous, and with your low PSA, I hope you are in the non-cancerous 50%!!!
Good luck and keep us posted.