[Diagnostic efficacy of echographic urethrography in the study of urethral stenosis. Comparison with radiologic retrograde urethrography]. / Eficacia diagnóstica de la uretrografía ecográfica en el estudio de estenosis uretrales. Comparación con la uretrografía retrógrada radiológica.

Presentation of the first study on the diagnostic efficacy in the study of stenosis with ultrasound urethrography (U.U.) as compared to X-ray retrograde urethrography (X.R.U.). Sensitivity of U.U. in anterior bulbar urethra is, in general, higher than that of X.R.U. (100 U.U. > 88 X.R.U.) while X.R.U. specificity is higher in the posterior bulbar urethra (100 X.R.U. > 97 U.U.). In penile urethra both techniques showed a 100% diagnostic efficacy. Stenosis located in the posterior bulbar urethra are the most difficult to diagnose with ultrasound techniques.

[Ultrasonic retrograde urethrography. Technique. Comparison with radiologic retrograde urethrography]. / Uretrografía retrógrada ecográfica. Técnica de realización. Comparación con la uretrografía retrógrada radiológica.

Using ultrasound scan urethrography (U.S.U.) and radiological retrograde urethrography (R.U.), the anterior urethra has been studied in 61 males in an attempt to establish the best technique to perform U.S.U. and to compare it, from the technical point of view, with R.U. U.S.U. should be made retrogradely filling the urethra with a saline solution, under direct ultrasound guidance, which allows to see the anterior urethra, from the syringe come introduced into the glandular urethra up to the urogenital diaphragm and the beginning of the membranous urethra. Overall, U.S.U. is faster to perform than R.U., nine times cheaper, more comfortable for the patient, and there is no risk of exposure to irradiation or radiological markers.

[Normal echographic anatomy of the penis and the perineum]. / Anatomía ecográfica normal del pene y del periné.

Sonourethrography has recently become available for evaluating the urethra. To perform this procedure correctly, precise knowledge of the ultrasound anatomy of the penis and perineum is required. Sixty-one males were studied using the 7.5 Mhz ultrasound transducer. During sonographic evaluation the site where the suspensory ligament of the penis is attached must be identified routinely. The nothc of the compressor nudae muscle in the posterior bulbous urethra can be visualized occasionally. The origin of the membranous urethra and urogenital diaphragm can be identified upon visualizing the entire urethral bulb and the cavernous bulb muscle.

[Non-stenotic anterior urethral lesions. Diagnosis by echographic urethrography]. / Lesiones de uretra anterior no estenóticas. Diagnóstico por uretrografía ecográfica.

The results of a study using sonographic urethrography, radiologic retrograde urethrography and urethroscopy to evaluate 11 different types of non-stenotic lesions of the urethra are presented. Sonographic urethrography accurately diagnosed all of the findings and radiologic retrograde urethrography had 7 false negatives. Based on the foregoing results, we advocate the use of sonographic urethrography as a valid alternative in the evaluation of non-stenotic urethral lesions.

[Hydraulic dilatation of urethral stenosis controlled with ultrasonography. A new approach]. / Dilatación hidráulica de estenosis de uretra bajo control ecográfico. Un nuevo enfoque.

The present study describes the ultrasound control of water dilatation for urethral stenosis. In our view, the door is open to future developments of water dilatation protocols for urethral strictures.