ArticleCanadian Urological Association journal = Journal de l'Association des urologues du Canada2025
Diagnostic performance of magnetic resonance imaging and targeted biopsy results in men with indwelling urinary catheters A propensity score-matched study.
Article in Canadian Urological Association journal = Journal de l'Association des urologues du Canada, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
introductionWe sought to evaluate multiparametric magnetic resonance imaging (mpMRI) findings and biopsy results in men with an indwelling catheter undergoing prostate cancer screening. mpMRI is central to the evaluation of prostate cancer. Little is known about the effect of an indwelling urinary catheter on prostate mpMRI findings and the results of subsequent biopsies.
methodsWe retrospectively reviewed 5820 mpMRI exams performed from 2017-2023. Forty-eight patients underwent mpMRI with an indwelling urinary catheter. Using propensity score matching, patients were matched 1:1 for age, pre-biopsy prostate-specific antigen (PSA), and prostate volume. Clinical characteristics, mpMRI findings, and targeted biopsy results were compared between the groups.
resultsAfter propensity score matching, clinical characteristics of the study groups did not differ significantly. Prostate Imaging-Reporting & Data System (PI-RADS) distribution did not show a significant difference (p=0.51); PI-RADS ≥3 lesions were identified in 20/48 (42%) patients with indwelling catheters and in 18/50 (36%) patients without catheters. Among patients with a PI-RADS score ≥3, clinically significant prostate cancer (csPCa) was identified in 5/20 patients carrying catheters and 6/18 patients without catheters (p=0.152). A higher rate of any cancer was identified in patients without a catheter (67% vs. 35%, p=0.049). PSA >9.79 ng/ml predicted the finding of csPCa in patients carrying urinary catheters with PI-RADS ≥3 lesions.
conclusionsOur findings suggest no significant difference in mpMRI findings and csPCa rates for patients with and without indwelling urinary catheters. Patients carrying urinary catheters suspected to harbor csPCa based on an elevated PSA level should undergo further evaluation, including mpMRI and biopsies when necessary before benign prostatic hyperplasia treatment.
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