Standardization of terminology of lower urinary tract function: pressure-flow studies of voiding, urethral resistance, and urethral obstruction. International Continence Society Subcommittee on Standardization of Terminology of Pressure-Flow Studies

Alternative mechanisms for prostate-specific antigen elevation: A prospective analysis of 222 transurethral resections of prostate patients

AIM: To investigate the relationship between prostate-specific antigen (PSA) levels and (1) bladder outlet obstruction (BOO) and (2) the severity of prostate inflammation.

METHODS: Two hundred and twenty-two consecutive patients undergoing transurethral resection of the prostate (TURP) were prospectively included. Patients with proven urinary tract infection and/or known prostate cancer were excluded. PSA levels, International Prostate Symptoms Score (IPSS), prostate weight, post residual volume and pressure flow parameters were determined. A histopathological assessment of the presence and severity of inflammation was also performed.

RESULTS: Patients had a mean age of 69.1 ± 8.6 years (45-90 years), with mean preoperative PSA levels of 4.7 ± 5.4 ng/mL (0.2-32.5 ng/mL) and IPSS of 15.7 ± 6.9 (0-32). Mean PdetQ_max was 96.3 ± 34.4 cmH₂O (10-220 cmH₂O). The mean resected prostate weight was 39.4 ± 27.3 g (3-189 g). Correlations were observed between PSA (logarithmic) and resected prostate weight (r = 0.54; P < 0.001), PSA (logarithmic) and PdetQ_max (r = 0.17; P = 0.032), and resected prostate weight and PdetQ_max (r = 0.39; P < 0.001). Furthermore, low correlations were observed between PSA (logarithmic) and active (r = 0.21; P < 0.0001) and chronic (r = 0.19; P = 0.005) inflammation.

CONCLUSION: In this study we showed a correlation between BOO (PdetQ_max) and PSA (logarithmic). Furthermore, we demonstrated a weak correlation between PSA (logarithmic) and active as well as chronic prostatic inflammation.