Hi Stuart,
You evidently had a TRUS biopsy in the first instance. They are liked by the NHS as they are cheaper but are very inaccurate and do not require a general anaesthetic.
We often find that TRUS biopsies have to be followed up with a much more accurate template biopsy later. Try and make sure your next test is a template, as it’s particularly relevant in marginal cases or where there is ‘suspicion’ such as yours. My template took 42 core samples, for example. It still confirmed cancer though..........
Best of luck.
Cheers, John.