Varicoceles: a coaxial coil occlusion system

Area of Science:

• Interventional Radiology
• Vascular Surgery

Background:

• Varicocele, an abnormal dilation of testicular veins, is a common cause of male infertility and scrotal pain.
• Traditional surgical and radiological interventions for varicocele have varying success rates and complication profiles.

Purpose of the Study:

• To evaluate the efficacy of a modified transfemoral technique for testicular venography and occlusion in treating varicoceles.
• To assess the feasibility of subselective catheterization and deep embolization within the testicular vein and its collaterals.

Main Methods:

• A modified transfemoral approach was employed for testicular venography and occlusion in 30 patients with 43 varicoceles.
• The technique involved coaxial catheterization to achieve subselective access to the testicular vein (TV) and its tributaries.
• Embolization was performed using coils, alone or with detachable balloons, placed deep within the vessels.

Main Results:

• Successful occlusion was achieved in all 17 left-sided varicoceles.
• A 90% success rate was observed for the 13 right-sided varicoceles.
• The coaxial technique facilitated deep embolization, indicating its effectiveness in managing complex varicocele anatomy.

Conclusions:

• The modified transfemoral technique provides a safe and effective method for varicocele treatment.
• This approach allows for precise embolization of the testicular vein and its collaterals, leading to high occlusion rates.
• The technique's ability to facilitate subselective catheterization and deep coil placement enhances treatment outcomes for varicoceles.