Two simple modifications can potentially change the future of proximal hypospadias surgery. Our series and a review of the literature

Abstract

Background/Objective To draw a hint towards two simple modifications that could potentially decrease the complication rate. Patients and Methods It was a single center, single operator and retrospective study. All patients with severe hypospadias operated according to koyanagi with or without modifications were presented. The surgical technique was described. Complications like fistula, stenosis, dehiscence and urethral diverticulum were studied. Results and Limitations Nineteen patients were included and presented in a chronological manner. The first four patients were operated according to the original koyanagi technique. The next 15 patients were operated according to koyanagi and the urethroplasty was covered by a tunica vaginalis flap. In 10 of them, glanduloplasty was done primarily and in the last 5 patients, glanduloplasty was done as a secondary procedure. The complication rates were 100% in the original koyanagi group, and 0% in the subset were glanduoplasty was deferred. Conclusions Systematically covering the urethroplasty with a tunica vaginalis flap and deferring the glanuloplasty might ameliorate the results of the koyanagi technique.

Comparative study of modified Koyanagi and staged Duckett for proximal hypospadias

“…At the same time, a testicular sheath or scrotum to cover the new urethra tube can signi cantly reduce the incidence of postoperative complications compared with Koyanagi [18] . However, with the widespread application of this operation, the incidence of postoperative complications is still as high as 50%-60%, mainly urinary stula and urethral diverticulum [19,20] . Although proximal hypospadias can be repaired in one stage, due to the severe VC, long urethral defect, penile dysplasia, poor development, lack of local repair materials, and severe penoscrotal translocation of proximal hypospadias, it is di cult to reduce the incidence of complications and achieve satisfactory cosmetic results.…”