Intraprostatic inflammation is positively associated with serum PSA in men with PSA <4?ng?ml(-1), normal DRE and negative for prostate cancer.
Umbehr MH, Gurel B, Murtola TJ, Sutcliffe S, Peskoe SB, Tangen CM, Goodman PJ, Thompson IM, Lippman SM, Lucia MS, Parnes HL, Drake CG, Nelson WG, De Marzo AM, Platz EA. Intraprostatic inflammation is positively associated with serum PSA in men with PSA <4?ng?ml(-1), normal DRE and negative for prostate cancer. Prostate Cancer Prostatic Dis. 2015 Sep; 18(3):264-9.