Free Prostate-specific Antigen Is a Better Tool Than Total Prostate-specific Antigen at Predicting Prostate Volume in Patients With Lower Urinary Tract Symptoms

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dc.contributor.authorKayıkçı, Ali
dc.contributor.authorÇam, Kamil
dc.contributor.authorKaçağan, Coşkun
dc.contributor.authorTekin, Ali
dc.contributor.authorAnkaralı, Handan
dc.date.accessioned2020-05-01T12:10:06Z
dc.date.available2020-05-01T12:10:06Z
dc.date.issued2012
dc.departmentDÜ, Tıp Fakültesi, Cerrahi Tıp Bilimleri Bölümüen_US
dc.descriptionAnkarali, Handan Camdeviren/0000-0002-3613-0523en_US
dc.descriptionWOS: 000310566300039en_US
dc.descriptionPubMed: 23107399en_US
dc.description.abstractOBJECTIVE To evaluate the relationships among age, total prostate-specific antigen level (PSA), free PSA level, and prostate volume. METHODS A total of 656 patients complaining of lower urinary tract symptoms who attended our urology outpatient department were enrolled. The standard assessment for lower urinary tract symptoms was applied, including serum total and free PSA determinations and transabdominal prostate volume measurement. Patients with a history of transurethral surgery, prostate cancer, and conditions other than benign prostatic hyperplasia that could affect the PSA levels were excluded. A linear regression model was used to estimate the prostate volume. Receiver operating characteristic curves were constructed to evaluate the ability of serum PSA and free PSA to estimate threshold prostate volumes and to select the optimal serum PSA and free PSA cutoff values. RESULTS The linear regression model included age (P < .000), total PSA (P < .006), and free PSA (P < .000) as independent predictors of prostate volume. Consequently, an easy to use equation was developed to estimate the prostate volume. Free PSA performed better than total PSA at predicting the prostate volume. An area under the curve of 0.668 +/- 0.022 at predicting prostate volume >40 cm(3) with total PSA increased to 0.721 +/- 0.021 with free PSA. Moreover, free PSA with a cutpoint of 0.495 ng/mL correctly estimated a prostate volume of >40 and <40 cm(3) in 71% and 66% of the cases, respectively. CONCLUSION The prostate volume can be estimated using easily obtained serum PSA levels, and free PSA had a better performance. UROLOGY 80: 1088-1092, 2012. (C) 2012 Elsevier Inc.en_US
dc.identifier.doi10.1016/j.urology.2012.08.004en_US
dc.identifier.endpage1092en_US
dc.identifier.issn0090-4295
dc.identifier.issue5en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage1088en_US
dc.identifier.urihttps://doi.org/10.1016/j.urology.2012.08.004
dc.identifier.urihttps://hdl.handle.net/20.500.12684/6009
dc.identifier.volume80en_US
dc.identifier.wosWOS:000310566300039en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Incen_US
dc.relation.ispartofUrologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleFree Prostate-specific Antigen Is a Better Tool Than Total Prostate-specific Antigen at Predicting Prostate Volume in Patients With Lower Urinary Tract Symptomsen_US
dc.typeArticleen_US

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