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[Urethral stenosis. Conceptual review and classification].

In an extensive review focused on male urethral stenosis, where more than 1,200 publications relative to this problem were evaluated, we found a lack of conceptual precision when it comes to qualify the varied terminology used to define concepts such as normal urethra, urethral stenosis, relapsing urethral stenosis, spongiofibrosis and urethral callus. The lack of precision may be due to the fact that we surgeons are more interested in reporting our surgical successes than in semantic appraisals. No publications have either been commented with a global approach to the problem of the various and potential classifications of urethral stenosis in the various etiological, clinical, radiological, endoscopic, ultrasonic or therapeutic aspects. The current paper is an update of this old urological problem. The guidelines outlined below are neither entirely original, nor the only or even the most correct approach of all those that can be used to address this issue. They are simply the result of the cumulative surgical and medical experience as well as of the enthusiasm we feel toward this part of urology.