Comparison of transrectal ultrasound prostatic volume estimation with magnetic resonance imaging volume estimation and surgical specimen weight in patients with benign prostatic hyperplasia

Tewari, Ashutosh; Indudhara, Ramaiah; Shinohara, Katsuto; Schalow, Erica; Woods, Mitchell; Lee, Ralph; Anderson, Charles M.; Narayan, Perinchery

doi:10.1002/(sici)1097-0096(199605)24:4<169::aid-jcu2>3.0.co;2-d

Cited by 77 publications

(26 citation statements)

References 12 publications

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“…Tewari et al [9] concluded that TRUS was inexpensive, easy to use, noninvasive and accurate when compared with MRI. Harada et al [13] showed that the adenoma could be differentiated on TRUS from normal prostatic tissue in patients with BPH, and Jones et al [14] distinguished adenoma from normal prostate using transabdominal ultrasonography.…”

Section: Discussionmentioning

confidence: 99%

The correlation between clinical outcome and residual prostatic weight ratio after transurethral resection of the prostate for benign prostatic hyperplasia

et al. 2000

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Objective To assess in a prospective study the use of a new variable, the residual prostatic weight ratio (RPWR), for evaluating the clinical outcome after transurethral resection of the prostate (TURP). Patients and methods From April 1996 to June 1997, 40 men (mean age 70.4 years, range 53± 85) with symptomatic benign prostatic hyperplasia were evaluated using the American Urological Association (AUA) symptom score, measurements of the mean and maximum urinary¯ow rate (Q ave and Q max ), and by transrectal ultrasonography (TRUS) before and 16 weeks after TURP. The estimated total prostate weight was derived as 0.52rlengthrwidthrheightrthe speci®c gravity of the prostate (1.010). The RPWR was calculated as the prostate weight after TURP divided by the initial weight, where the value after TURP was the initial weight minus that of the TURP specimen. The clinical outcome was evaluated by the difference (D)in AUA score, Q max and Q ave before and 16 weeks after surgery. Results There was a close correlation between the estimated prostate weight and the actual weight of the TURP specimen (r = 0.82 and 0.80 for the adenoma and total prostate, respectively). The mean (SD) RPWR, DAUA score, DQ max and DQ ave were 50.1 (17.1)%, 11.5 (5.3), 9.0 (4.2) mL/s and 6.2 (2.9) mL/s, respectively. There was a negative correlation between the RPWR and the DAUA, DQ max and DQ ave (r = x0.81, x0.68, and x0.70, respectively, P<0.05). The prostate volume estimated by TRUS decreased signi®cantly 16 weeks after TURP. Conclusions TRUS is a useful tool for estimating prostate weight before surgery. The smaller the RPWR at 16 weeks after TURP, the better the clinical outcome.

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Section: Discussionmentioning

confidence: 99%

The correlation between clinical outcome and residual prostatic weight ratio after transurethral resection of the prostate for benign prostatic hyperplasia

et al. 2000

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“…The prostate was measured in three dimensions and volume was automatically calculated in cubic centimeter using a modification of the prostate ellipsoid formula. 20 Imunodetection of analytes tPSA and fPSA. To detect tPSA and fPSA, we used the commercialized version of a previously reported dual-label assay (DELFIA ProStatus PSA free/total kit, PerkinElmer Life Sciences) that measures tPSA and fPSA on an equimolar basis.…”

Section: Volumetric Analysis Of the Prostate Glandmentioning

confidence: 99%

Free PSA isoforms and intact and cleaved forms of urokinase plasminogen activator receptor in serum improve selection of patients for prostate cancer biopsy

Steuber

Vickers

Haese

et al. 2007

Intl Journal of Cancer

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Clinicians currently use simple cut-points, such as serum prostatespecific antigen (PSA) 4 ng/ml, to decide whether to recommend further work-up for prostate cancer (PCa). As an alternative strategy, we evaluated multivariable models giving probabilities of a PCa diagnosis based on PSA and several circulating novel biomarkers. We measured total PSA, free PSA (fPSA), fPSA subfractions (single-chain fPSA-I and multichain fPSA-N), total human glandular kallikrein 2 (hK2) and full-length and cleaved forms of soluble urokinase plasminogen activator receptor (suPAR) in pretreatment serum from 355 men referred for prostate biopsy. Age and total PSA were combined in a ''base'' regression model to predict biopsy outcome. We then compared this base model to models supplemented by various combinations of circulating markers, using concordance index (AUC) to measure diagnostic discrimination. PCa prediction was significantly enhanced by models supplemented by measurements of suPAR fragments and fPSA isoforms. Addition of these markers improved bootstrap-corrected AUC from 0.611 for a cut-point and 0.706 for the base model to 0.754 for the full model (p 5 0.005). This improved diagnostic accuracy was also seen in subanalysis of patients with PSA 2-9.99 ng/ml and normal findings on DRE (0.652 vs. 0.715, p 5 0.039). In this setting, hK2 did not add diagnostic information. Measurements of individual forms of suPAR and PSA isoforms contributed significantly to discrimination of men with PCa from those with no evidence of malignancy. ' 2006 Wiley-Liss, Inc.

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“…Volume estimates may be useful for radical prostatectomy, brachytherapy, and benign prostate surgery planning. [1][2][3][4][5][6] Prostate volume can also be used for calculating prostate-specific antigen (PSA) density when selecting active surveillance candidates. 2 Volume estimation using other means, such as digital rectal exam or PSA are inaccurate.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8] Studies evaluating the accuracy of transrectal ultrasound (TRUS) for estimating prostate volume have reported mixed results. 1,3,5,8,9 Some studies have reported that TRUS underestimates prostate volume, while others have found that TRUS overestimates prostate volume. 1,4,5,8,9 A small number of studies have evaluated the accuracy of magnetic resonance imaging (MRI) prostate volume estimates.…”

Section: Introductionmentioning

confidence: 99%

Prostate volume estimations using magnetic resonance imaging and transrectal ultrasound compared to radical prostatectomy specimens

Paterson

Lavallée²,

Nguyen³

et al. 2016

CUAJ

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Introduction: We sought to evaluate the accuracy of prostate volume estimates in patients who received both a preoperative transrectal ultrasound (TRUS) and magnetic resonance imaging (MRI) in relation to the referent pathological specimen post-radical prostatectomy. Methods: Patients receiving both TRUS and MRI prior to radical prostatectomy at one academic institution were retrospectively analyzed. TRUS and MRI volumes were estimated using the prolate ellipsoid formula. TRUS volumes were collected from sonography reports. MRI volumes were estimated by two blinded raters and the mean of the two was used for analyses. Pathological volume was calculated using a standard fluid displacement method. Results: Three hundred and eighteen (318) patients were included in the analysis. MRI was slightly more accurate than TRUS based on interclass correlation (0.83 vs. 0.74) and absolute risk bias (higher proportion of estimates within 5, 10, and 20 cc of pathological volume). For TRUS, 87 of 298 (29.2%) prostates without median lobes differed by >10 cc of specimen volume and 22 of 298 (7.4%) differed by >20 cc. For MRI, 68 of 298 (22.8%) prostates without median lobes differed by >10 cc of specimen volume, while only 4 of 298 (1.3%) differed by >20 cc. Conclusions: MRI and TRUS prostate volume estimates are consistent with pathological volumes along the prostate size spectrum. MRI demonstrated better correlation with prostatectomy specimen volume in most patients and may be better suited in cases where TRUS and MRI estimates are disparate. Validation of these findings with prospective, standardized ultrasound techniques would be helpful.

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Comparison of transrectal ultrasound prostatic volume estimation with magnetic resonance imaging volume estimation and surgical specimen weight in patients with benign prostatic hyperplasia

Cited by 77 publications

References 12 publications

The correlation between clinical outcome and residual prostatic weight ratio after transurethral resection of the prostate for benign prostatic hyperplasia

The correlation between clinical outcome and residual prostatic weight ratio after transurethral resection of the prostate for benign prostatic hyperplasia

Free PSA isoforms and intact and cleaved forms of urokinase plasminogen activator receptor in serum improve selection of patients for prostate cancer biopsy

Prostate volume estimations using magnetic resonance imaging and transrectal ultrasound compared to radical prostatectomy specimens

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