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Updated: Jul 11, 2026

Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
[Longitudinal intussusception versus end-to-side vasoepididymostomy: Comparison of their recanalization rates]
Lu-Gang Zhao1, Hong Chen1, Gui-Hua Liu1
1Center of Reproductive Medicine / Research Institute of Biomedical Innovation, The Sixth Hospital Affiliated to Sun Yat-sen University, Guangzhou, Guangdong 510655, China .
Objective:
To compare the recanalization rate of 2-suture longitudinal intussusception vasoepididymostomy (LIVE) with that of 4-suture end-to-side vasoepididymostomy (ESVE).
Methods:
This retrospective case-control study included 127 cases of obstructive azoospermia (OA) treated by LIVE (n = 87) or ESVE (n = 40) in our Center of Reproductive Medicine from October 2013 to July 2024. We analyzed the clinical data and compared the age, testis volume, level of serum follicle-stimulating hormone (FSH), operation time and postoperative recanalization rate between the two groups.
Results:
Spermatozoa were observed in 90 (70.9%) of the 127 cases after surgery. There were no statistical differences in age, testis volume and FSH between the two groups of patients (all P > 0. 05), and nor were there any serious surgical complications. The operation time was significantly longer in the ESVE than in the LIVE group (22.0 [20.0-25.8] vs 17.0 [15.0-23.0] min, P < 0.05), while the postoperative recanalization rate remarkably higher in the former than in the latter group (85.0% vs 64.4%, P < 0.05). Vasoepididymostomy was performed at the caput epididymis in 11 cases, with a higher recanalization rate in the ESVE than in the LIVE group (50.0% [1/2] vs 33.3% [3/9]).
Conclusion:
ESVE achieved a higher postoperative recanalization rate than LIVE in the treatment of OA, but its advantages need further investigation.
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