1,722,551 research outputs found
One-sided anterior urethroplasty: a new dorsal onlay graft technique
No full textOBJECTIVE To investigate the feasibility, tolerability, safety and efficacy of using a new surgical technique for the repair of anterior urethral strictures to preserve vascular supply to the urethra and its entire muscular and neurogenic support. PATIENTS AND METHODS In all, 24 patients (mean age 46 years) underwent a new one-sided anterior dorsal oral mucosal graft urethroplasty while preserving the lateral vascular supply to the urethra, the central tendon of the perineum, the bulbospongiosum muscle and its perineal innervation. The cause of stricture was instrumentation in three cases (12%), unknown in five (21%), infection in four (17%), and lichen sclerosus in 12 (50%). The stricture site was bulbar in 12 cases (50%) and panurethral in 12 (50%). The mean stricture length was 4.2 cm in patients with bulbar strictures and 10 cm in patients with panurethral strictures. Of 24 patients, 20 patients (83%) had received previous treatments. Clinical outcome was considered a failure when any postoperative instrumentation was needed, including dilatation. RESULTS The overall mean (range) follow-up was 22 (12-55) months. Of the 24 patients, 22 (92%) had a successful outcome and two (8%) were failures. One failure was treated using definitive perineal urethrostomy and another failure underwent successful internal urethrotomy. CONCLUSIONS The preservation of the one-sided vascular supply to the urethra and its entire muscular and neurogenic support should represent a slight but significant step toward perfecting the surgical technique of urethral reconstruction using a minimally invasive approach
Cryopreserved Penile Tunica Albuginea for Allotransplantation: A Morphological and Ultrastructural Investigation
Full text linkIntroduction. Peyronie's disease, a connective tissue disorder of penile tunica albuginea (TA) associated with penile deformity, curvature, pain, and erectile dysfunction, is best managed surgically, but suitable graft biomaterials are not available. Aim. To establish whether cryopreservation affects human TA in view of its use in allotransplants. Methods. The effects on TA samples of the two most widely used tissue cryopreservation methods were investigated using an ad hoc panel of histochemical, immunohistochemical, and ultrastructural tests. Apoptotic cells were evaluated using the terminal deoxynucleotidyl transferase method of end labeling (TUNEL) assay. Main Outcome Measures. Assessment of tissue integrity and arrangement of collagen and elastic fibers in thawed TA. Results. Both cryofixation methods provided TA tissue suitable for use as graft material. Significant ultrastructural changes, namely, a greater diameter of collagen fibrils, were detected in sections preserved in liquid nitrogen; nonetheless, such increase never exceeded the normal range. The comprehensive panel of assays used proved suitable to characterize the thawed tissue. Conclusion. Human TA is suitable for cryopreservation; freezing at -80°C provides better results than preservation in liquid nitrogen. Loreto C, Orlandi A, Ferlosio A, Djinovic R, Basic D, Bettocchi C, Rutigliano M, Barbagli G, Vespasiani G, Caltabiano R, Musumeci G, and Sansalone S. Cryopreserved penile tunica albuginea for allotransplantation: A morphological and ultrastructural investigation. J Sex Med **;**:**-**
Bacteriologic, histologic and ultrasonographic findings in strictures recurring after urethrotomy. A preliminary study
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Bulbar urethroplasty: transecting vs. nontransecting techniques
No full textTo transect or not to transect the bulbar urethra in nontraumatic urethral strictures still remains an issue that is open to debate. Herewith, we evaluate and compare the results of these two different options in the treatment of bulbar urethral strictures
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