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The Value of Age-adjusted Prostate Specific Antigen Density (AAPSAD) Helps to Avoid Unnecessary Biopsies in Men with Intermediate Serum PSA Levels

Other Title
혈청PSA 4.0-10.0 ng/㎖인 환자에서 불필요한 전립선침생검을 줄이기 위한 새로운 예측인자로서 Age-adjusted Prostate Specific Antigen Density(AAPSAD)의 유용성
Authors
최, 민규; 주, 관중; 김, 영수; 김, 세중; 안, 현수; 김, 영부; 최, 종보
Citation
Taehan Pinyogikwa Hakhoe chi, 43(5):391-395, 2002
Journal Title
Taehan Pinyogikwa Hakhoe chi; The Korean journal of urology; 대한비뇨기과학회지
ISSN
0494-4747
Abstract
PURPOSE: Prostate biopsies were performed usually in patients with intermediate Prostate Specific Antigen (PSA) levels, however cancer detection rate was low. We would like to reduce unnecessary biopsies by developing a new PSA formula for determining cancerous conditions of the prostate.



MATERIALS AND METHODS: We retrospectively enrolled 99 patients with intermediate serum PSA levels. The patients were divided into two groups, the prostate cancer group (19 patients) and the benign disease group (80 patients). We developed a new formula to calculate the age-adjusted PSA density (AAPSAD), and applied it to both groups. In addition, we compared the efficacy of AAPSAD in detecting prostate cancer in men with intermediate PSA levels, compared with other PSA parameters.



RESULTS: The prostate cancer patients had higher AAPSAD than non-prostate cancer patients (p=0.000). The sensitivity, and specificity, of AAPSAD were 94.7% and 60.0%, respectively at a cut-off level of 0.6, and higher than those obtained for the Prostate Specific Antigen Density (PSAD), PSA density of the transitional zone (PSA-TZ) and free to total PSA ratio (F/T PSA ratio).



CONCLUSIONS: We suggest that the use of AAPSAD, in patients with intermediate PSA levels, may be helpful, not only to detect prostate cancer, but also to reduce unnecessary prostate biopsies.
Keywords
Prostatic neoplasmsProstate-specific antigenParameter
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Journal Papers > School of Medicine / Graduate School of Medicine > Urology
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