Prostatic calculi are common but little is known of their effect on serum prostate specific antigen (PSA). We investigated whether prostatic calculi might influence serum PSA in men with clinically undetectable prostatic cancer or prostatitis.
Department of Urology, Clinical Research Institute, Seoul National University Hospital, 28 Youngon Dong, Jongno Ku, 110-744 Seoul, Korea. urology@snu.ac.kr