Neutrophils are the major kinds of white blood cells. Neutrophil count is part of the standard white blood cell (WBC) count done in routine bloodwork. They get elevated in response to infection and may be a clue that that is what is going on. Here's a reference to show your doctor:
Low serum neutrophil count predicts a positive prostate biopsy.They can also culture your prostatic secretions and look at the white blood cells there pre and post a prostate massage.There is a diagnostic test called a Meares-Stamey 4-glass test, where they collect urine pre and post a prostate massage. Maybe you can ask for that before you get another biopsy.
The chronic inflammation
means chronic prostatitis (which may coexist in the same prostate with BPH and PC), so you seem to have a diagnosis of that. It's not unusual to have prostatitis that is unresponsive to antibiotics. It's been estimated that about
a third of men have chronic prostatitis that is asymptomatic and unresponsive to antibiotics. However, it makes interpreting your PSA a nightmare. %fPSA cannot distinguish well between chronic prostatitis and PC. PCA3 can, but not everyone with PC expresses it. The new PHI test, when available, should do a better job of distinguishing them.
I think that all those transrectal biopsies you've had may have made matters worse. Each time a core is taken, fecal bacteria are injected into the prostate. Also, you've taken a course of antibiotics each time, which increases the probability of bacterial resistance. One good thing about
a saturation biopsy is that it is transperineal rather than transrectal, so it is less likely to cause infection even though it is filling your prostate with holes and scar tissue.