{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T21:41:44Z","timestamp":1790286104835,"version":"4.1.0"},"reference-count":22,"publisher":"Wiley","issue":"12","license":[{"start":{"date-parts":[[2006,11,16]],"date-time":"2006-11-16T00:00:00Z","timestamp":1163635200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int J of Urology"],"published-print":{"date-parts":[[2006,12]]},"abstract":"<jats:p><jats:bold>Aim:<\/jats:bold> The aims of this study were to define the relationship between intravesical prostatic protrusion (IPP), prostate\u2010specific antigen (PSA) and prostate volume (PV) and to determine which one of them is the best predictor of bladder outlet obstruction (BOO) due to benign prostatic enlargement.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> A prospective study of 114 male patients older than 50\u2003years examined between November 2001 and 2002 was performed. They were evaluated with digital rectal examination, International Prostate Symptoms Score, PSA, uroflowmetry, postvoid residual urine measurement, IPP and PV using transabdominal ultrasound scan. Statistical analysis included scatter plot with Spearman\u2019s correlation coefficients and nominal logistic regression<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> Prostate volume, IPP and PSA showed parallel correlation. Although all three indices had good correlation with BOO index, IPP was the best. The Spearman rho correlation coefficients were 0.314, 0.408 and 0.507 for PV, PSA and IPP, respectively. Using receiver\u2010operator characteristic curves, the areas under the curve for PV, PSA and IPP were 0.637, 0.703 and 0.772, respectively. The positive predictive values of PV, PSA and IPP were 65%, 68% and 72%, respectively. Using a nominal regression model, IPP remained the most significant independent index to determine BOO.<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> All three non\u2010invasive indices correlate with one another. The study showed that IPP is a better predictor for BOO than PSA or PV.<\/jats:p>","DOI":"10.1111\/j.1442-2042.2006.01611.x","type":"journal-article","created":{"date-parts":[[2006,11,16]],"date-time":"2006-11-16T09:55:21Z","timestamp":1163670921000},"page":"1509-1513","source":"Crossref","is-referenced-by-count":98,"title":["Comparison of intravesical prostatic protrusion, prostate volume and serum prostatic\u2010specific antigen in the evaluation of bladder outlet obstruction"],"prefix":"10.1111","volume":"13","author":[{"given":"KOK BIN","family":"LIM","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"HENRY","family":"HO","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"KEONG TATT","family":"FOO","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MICHAEL YUET CHEN","family":"WONG","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"STEPHANIE","family":"FOOK\u2010CHONG","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2006,11,16]]},"reference":[{"key":"e_1_2_6_2_2","unstructured":"ChatelainCH DenisL FooKT KhouryS McConnellJ(eds). 5th International Consultation on BPH.Health United Publications UK 2001;519\u201333."},{"key":"e_1_2_6_3_2","doi-asserted-by":"crossref","first-page":"530","DOI":"10.1097\/01.ju.0000078083.38675.79","article-title":"AUA guideline on management of benign prostatic hyperplasia 2003. 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