Objectives: To determine the prevalence of radiologic images suggestive of urethral diverticula (UD) in men with spinal cord injury (SCI) and to study the interobserver diagnostic reproducibility. Methods: Radiological studies (i.e. voiding cystourethrography and retrograde urethrography) performed over 1 year on men with SCI were independently reviewed by 3 researchers (1 urologist and 2 radiologists). Results: The prevalence of UD was found to be between 4.2 and 9.8% of the patients, the higher figure obtained when including also the doubtful images. The kappa index of agreement between the researchers was low (between 0.15 and 0.40). The factors that significantly influenced agreement were localization in the prostatic urethra (p = 0.021), localization in the penile urethra (p = 0.000) and fusiform morphology (p = 0.004). Logistic regression analysis showed that the variables that independently influenced diagnostic agreement were the following: localization in the penile urethra (in favor of agreement) and fusiform morphology (against agreement). Conclusions: Radiologic images suggestive of UD constitute a frequent finding in men with SCI and raise important diagnostic problems.
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