ComplicationsBy Mayo Clinic staff
A varicocele may cause:
- Shrinkage of the affected testicle (atrophy). The bulk of the testicle comprises sperm-producing tubules. When damaged, as from varicocele, the testicle shrinks and softens. It's not clear what causes the testicle to shrink, but the malfunctioning valves allow blood to pool in the veins, which can result in increased pressure in the veins and exposure to toxins in the blood that may cause testicular damage.
- Infertility. It's not clear how varicoceles affect fertility. The testicular veins cool blood in the testicular artery, helping to maintain the proper temperature for optimal sperm production. By blocking blood flow, a varicocele may keep the local temperature too high, affecting sperm formation and movement (motility).
- Mohammed A, et al. Testicular varicocele: An overview. Urology International. 2009;82:373.
- Varicoceles. American Urological Association Foundation. http://www.urologyhealth.org/urology/index.cfm?article=116. Accessed Oct. 31, 2011.
- Khera M, et al. Evolving approach to the varicocele. Urologic Clinics of North America. 2008;35:183.
- Robinson SP, et al. Treatment strategy for the adolescent varicocele. Urologic Clinics of North America. 2010;37:269.
- Wampler SM, et al. Common scrotal and testicular problems. Primary Care Clinics in Office Practice. 2010;37:613.