Comparative study of modified Koyanagi and staged Duckett for proximal hypospadias.

Aim: To compare and analyze the clinical efficacy of modified Koyanagi and staged Duckett for proximal hypospadias.

Method: The clinical and prognostic data of children were treated and underwent surgery (modified Koyanagi or stage Duckett) in the Department of Urology, Kunming Children's Hospital from January 2020 to January 2023 were retrospectively analyzed. According to different surgical methods, the subjects were divided into the modified Koyanagi group and the staged Duckett group. Patients in both groups were followed up for more than 6 months after surgery. The success rate and complications of postoperative surgery in both groups were analyzed.

Result: A total of 63 patients were included in this study, 34 in the modified Koyanagi group and 29 in the staged Duckett group. A total of 14 patients in the modified Koyanagi group experienced postoperative complications, the success rate of the surgery was 58.82%, and 5 among them experienced more than two kinds of complications. A total of 5 children in the staging Duckett group experienced postoperative complications, and the success rate of the operation was 82.75%. There were significant differences in the incidence of overall complications and fistula between the two surgical methods (P = 0.028).

Conclusion: Compare with modified Koyanagi, staged Duckett can significantly reduce the incidence of overall complications and urethral fistula in patients, and have obvious advantages in the treatment of proximal hypospadias.