Sparky9 said...
...most recently had a UTI and multiple peeing at night and a lot of frequency. It sounds like enlarged prostate...
if your brother had cancer based off the symptoms you presented to us, the cancer would be highly advanced. i would agree with your thinking that it sounds more like your brother may have BPH, prostatitis or a UTI. at least two of those i know of can have an impact on a mans PSA. i think a history of PSA could help, but a PSA of 8 is a good indicator that a biopsy may be needed vs. a PSA of between 4 and 6.
as the others have noted i would ask that you find a good urologist you trust and
DON'T be afraid to ask questions.