First of all, try not to worry too much, I know it is difficult, but with your PSA result, cancer is much less likely than other causes such as BPH. If you have a prostate enlarged enough to cause serious urination problems, then it is very likely that the PSA score is as a result of BPH. I was having urination problems so had a PSA test which came back as 8.9 last April. That is a little high for BPH, with my prostate which around double the normal size at 54cm, then PSA up to around 7.5 could be expected. I had a biopsy which was clear, but a follow up PSA test in September was 14.7 and 15.0 two weeks later. I had an MRI scan in November, which was encouraging (the urologists words) but not completely clear, couple of fuzzy areas, so I am now going to have a template biopsy. My PSA is still 15 so at least it is not going up, but there is no explanation for it. It could be prostatitis brought on by the biopsy, but the only way to find out whats's going on is the biopsy. An MRI scan is useful but the only way to truly diagnose cancer is a biopsy. That said, I would want the MRI first if possible, because they can use the results of that to try to target suspicious areas rather than going in completely blind.