Abstract:Objective To investigate the clinical results of plasma electrosurgery in elderly female patients with urethral caruncle using a modified homemade urethral extender.Methods 28 patients with urethral caruncle were admitted from January 2019 to December 2022, all with modified homemade urethral extender-assisted plasma electrosurgery, and the patients’ operative time, length of hospital stay, catheter retention time and occurrence of postoperative complications were analyzed.Results All the 28 patients in this group completed the operation successfully with the assistance of homemade urethral extender, no conversion to open surgery. The operation time was 15 ~ 40 min, with an average of (24.4 ± 6.4) min. The catheter retention time was 3 ~ 7 d, with an average of (5.1 ± 1.1) d. The hospitalization time was 4 ~ 8 d, with an average of (6.5 ± 1.0) d. After removal of catheter, all urination was clear, no recent complications such as urinary incontinence and urination difficulty, and all had pathology suggestive of urethral caruncle. Follow up time was 2 ~ 22 months, with an average of (11.8 ± 6.5) months, no long-term complications such as urethral stricture and recurrence of urethral caruncle occurred.Conclusion Endoscopic treatment of urethral caruncle with a modified homemade urethral extender is one of the safe and effective treatments that deserves clinical promotion.